First trip,. First mishaps

Yet one more mishap and heartbreak:

I opened the rear hatch and held it up the plastic clip - the clip that is painted in 3 colors to blend in to the painted design.
Per normal one brain cell fires off that the clip is a disaster waiting to happen if I forget to the release it when closing the hatch.
You've already guessed but you're slightly wrong.

SHMBO went out to lock up the PC.  She comes back in with "I did a bad thing."
I wanna die.   

We saved the painted cover in hopes that it can be put on a new clip base.

Ron, how did you remove the tie down loops?
We tried to unscrew them but since you can't get to the bolts inside the body they don't come loose.
My next try would be to cut them with my angle grinder but......ooooohhhhh.
Do you need to remove both the top and bottom hooks?  Gotta measure.

Here's the table on Amazon: https://www.amazon.com/gp/product/B003YJPC2A/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

We took a look at the gray tank valve as Dave suggested, but there's no way to get to the power lead to test it.

I'll take it to Elkhart.

As I said I have some things I need to consult with them on anyway, like installing grab bars and running cables.

Oh, Ron!  Did you open the dog house to wire the additional 12v outlets?  I have one to put in to the dash where there's a blank plug and can always use 2 more.
My setup requires literally 6 or more USB power cables, with at least 2 as Power Delivery.

MikeA - re the tie down hooks in the rear storage - inspired by Ron's post I removed the bottom hooks (only the bottom) and the table (same model table) fits perfectly.  On my 2019 2552 I could reach the nuts inside the bumper with a wrench (1/2" I think).  Perhaps they may not be accessible on your model.  Besides a few head bumps reaching up in there it was simple.  Good luck and thanks again Ron.  Gary

Mikea: I did the same thing to mine on its first day home. Except that the clip didn't break but the screws pulled out so I was able to find slightly larger screws and put it back.
I was out shopping for an entry level travel trailer with my daughter last week and noticed that the Coachman TT we were looking at had magnetic catches that do the same job on their flip up compartment doors. I' thinking if (when) I ever do break my latches, I will look into magnetic. The ones on the TT were obviously very cheaply made but worked great!

Had to look up SHMBO, but I live in the same world. 

Yet one more mishap and heartbreak:

I opened the rear hatch and held it up the plastic clip - the clip that is painted in 3 colors to blend in to the painted design.
Per normal one brain cell fires off that the clip is a disaster waiting to happen if I forget to the release it when closing the hatch.
You've already guessed but you're slightly wrong.

SHMBO went out to lock up the PC.  She comes back in with "I did a bad thing."
I wanna die.   

We saved the painted cover in hopes that it can be put on a new clip base.

Mike (and Gary),

It has been roughly 12 years, so my recollection is "faded" regarding how the tie-downs came off the back wall.  I thought the top one was "self-tapping" like a lag bolt.  It was screwed into a wood support behind the panel.  The bottom had a nut behind it like Gary's experience.  Again, my memory is not clear about it.

Regarding my extra 12V outlets mounted in my "2007 design" doghouse cup holder.
The project does not involve removing the dog house.  As I recall, I easily popped out the lower 12V outlet in the dash.  That is the high power cigarette-lighter with heavy gauge wire.  I tapped into it and fished the wire from there under the radio, then down from there.  I placed gray shrink tubing over the wire where it is exposed for it to look better than a pair of colored wires.

If you do as I did, you will surely want to add a connector as I did, so you can unplug the cup holder and get it out of the way when servicing the engine.

OOOOhhhh. Does the cupholder lift up?

I talked to Keith who assured me that I can drain the gray tank with the manual valve.  I didn't know there was a manual valve.

OOOOhhhh. Does the cupholder lift up?

Yes it easily detaches from the dog house (engine cover).  Feel underneath the cup holder.  There is a metal tab.  You either push it forward or pull it rearward while lifting up on the cup holder and it comes right off easy.

If installing two 12V outlets like I did, as I recall, there are some structural plastic tabs that limit the placement of the outlets.  That is why my two outlets are slightly skewed to the driver side.

I just got my 2551 serviced by Phoenix RV USA in Elkhart.
Doug showed me how the doghouse can be pulled up, AND how you can snap the cover of the instrument panel loose a bit starting at the right hand side.

I think I'll just add a 12v socket in the unused plug location so I have 3 sockets.

I was thinking of adding 2 sockets where Ron has his on the front of the doghouse but I'm fairly sure that would put the cables in my way. 
As it is I already have a hard squeezing my big feet around the doghouse in to the driver's seat from the inside.

I'm going to add one or two electrical outlets with USB ports so I have other places to charge stuff - prolly on the cabinet by the side door and maybe the one under the kitchen counter or in the rear cabinet where the rear TV is mounted.
BTW, you can get a Leviton outlet with USB-C ports with Power Delivery for a Macbook or Smartphone with USB-C.  https://smile.amazon.com/gp/product/B07PQ9BTNR/ref=ox_sc_saved_title_2?smid=ATVPDKIKX0DER&psc=1