Mine was with the slide out. Regular rain had not triggered the river but last night must have had rain that was too hard or blowing a different direction or something. First I knew about it was stepping on the rug this morning.
Leaking with the slide out indicates either the coach is not quite level, letting water build up against the seal or that the slide is slightly out of alignment leaving a gap at the seal or not quite all the way out. One thing I did not understand at first is that opening the slide part way is a bad idea, from a leak perspective, as neither of the seals can function in that position.
The slide is self-aligning, there is a section in the manual about it. Basically you run the slide all the way out, holding the switch in the 'out' position until the slide stops itself. Then run it all the way in, again do not let go of the switch until the slide stops by itself. Repeat this three or four times and the motors are supposed to re-align themselves.
My leak is only with the slide in and driving in heavy rain. It will be difficult to find because repeating the circumstances that cause it require both a heavy rain and me driving in it. All I can do is caulk one thing and re-test. I'm thinking to maybe get outside with a garden hose and try spraying the rig with that to see if I can force water in but I'm not sure that is a valid test.
@ron-n-toni I'll check that, I had not considered that seam. The water seems to run out onto the top of the slide from the leading edge. Then as we go around curves or up hills the water moves around. I have spoken to Kermit and he basically said what I'm seeing cannot happen because the top of the slide is sloped to prevent it. So I think it is a combination of rain and driving on curving roads producing a result that might not be seen when stationary.
@catsaplenty, yes I think my break-in has been a little rougher than I expected. After hearing all about the great quality Phoenix has, I am a little disappointed in the number of issues I have had with my rig so far. Not disappointed with the rig itself, or with the response from the factory. They have fixed everything I have brought to their attention, (well except the slide leak and air conditioning). But a lot of my items should have been done right the first time. I suspect my rig was on the line during holiday break and things got missed when they came back, but who knows. On the bright side I know far more about the rig than most owners after going through all the fixes:)