Originally Posted by Stormrider151
I looked at doing that. The edge seams are very tight. The inner material is loose almost like its stretched a bit. I'm wondering if I loosened one side to allow it to drain would it track right when rolling up. Probably not. My hybrid was like that and never held water.
Not uncommon on LONGER slide toppers.
The roller tube on most slide toppers is smaller than a roller tube on a main awning. The roller tube flexes more and leaves the center somewhat loose.
If you look down along the tube when the slide is extended you'll probably see it bowed a bit towards the RV. Typical.
Tightening the springs just adds undue pressure to the roller anchor points, fabric and slide frame. In some cases, tightening too much to overcome the sag, will keep the slide from extending into full-out position.
Holding water isn't really a problem. It will make a bit of a mess when the slide is put in but it won't hurt anything. (maybe if it freezes it could come down as a big chunk)
There's lots of discussion about using an inflatable beach ball or making a PVC support. All things you must remember to install and remove.
Dometic does make a slide topper tube support cradle kit which could help should you so desire. (comes in many colors)