Allcool, thanks for the info and words of hope. So far, the rest of the trailer looks ok, no separation issues or anything. I'll call RV Doctor in the morning. SolidAxle, the kitchen is on a slide (Norco/BAL cable type, but that is another story) so no flex check there. That slide trim did start to separate at the lower left corner at one point, but had that fixed. I will check into any more issues as far as flex symptoms. The garage floor and walls seem to be pretty solid, relatively speaking. No alignment problems that I can see. I did get to experience the wall seam you spoke about. That is a lousy way to do it. I put treated wood behind it and filled it with sealer and put the trim back on. Hope that holds up.