cyntdon2010 wrote:
We Now always place a board under tires to drain water away from the slideout side. also go slow when closing to let water run off top.
I too always will go slightly higher on the non-slide-out side of our TT when leveling to make sure water properly drains away.
What would concern me though is the OP's mention of a sagging slide roof where water is pooling. Hard to tell just from guessing if the OP's TT was properly leveled and water still pooled or not. Certainly the dealer will probably come back and say the TT wasn't leveled properly.