Drove 350 miles today on our first trip after having a front end alignment on our 2350. I'm posting here, as promised, not to hijack your thread Gail, but hopefully, some of this will help. I haven't driven any significant distance without towing our 4600lb Jeep Cherokee Trailhawk, so that may skew my observations.
On our first trip a few weeks ago, we noticed some tail wagging, rut tracking, and slight drift/wandering. The tail wagging and rut tracking were the biggest issues, but not horrible.
We had the front end aligned and I intended to take the next trip with no other adjustments, but Ron's comments made sense to me. I did not think the tail wag issue would be solved with just an alignment so we also had a SuperSteer Trac bar installed before departing.
Today we drove 350 miles which included two high passes in Colorado, gusty crosswinds, hail, snow, and even some nice blue sky with calm winds! Didn't see too much in the way of rutted pavement.
The tail wagging is almost completely gone! I'm certain this is a result of the trac bar. Since we didn't have much rutted pavement like our previous trip, it's hard to say if we would have noticed much difference today.
Now for the part that wasn't so great. For our front end alignment, we had our + caster adjusted to something close to 5.0 based on recommendations from other forums. This required installation of offset bushings like the ones that Ron posted.
Supposedly, according to the posts I read on the other forums, this would tighten the steering, reduce crosswind effects, reduce tail wag, and make the drive more relaxing!
For us, it was the opposite. Without me expressing my observations, I asked my wife what she thought after driving. Her impressions were the same as mine. We both thought the tail wagging had all but disappeared, but the front end appeared to have more steering play and more wander. I'm puzzled by this. One thing we did not do is load the coach as if we were departing on a trip, prior to having it aligned, as Ron suggested. Perhaps this affected the alignment enough to result in the drift/wander.
I've read the SuperSteer/Henderson education pages on Steering Freeplay, Road Wander, etc. Those articles mention a lot of potential culprits in the steering mechanism, most of which are the result of worn out parts. Our coach is pretty new, so I doubt it is due to worn steering parts.
The next step for us is to have the alignment reevaluated, with the coach loaded. Also, I'm considering the Safe-T-Plus steering control. As I understand it, the primary purpose is to return the steering to center in a variety of circumstances, but I've read a few posts elsewhere that claim it tightened up steering and reduced drift/wander.
Hope this helps you when you are evaluating your PC's handling! BTW, I found the education pages on the SuperSteer website to be very helpful!
Bob