Well, we love our 21ssl.....it hauls our toys and we've enjoyed it, but right now, it's taking a bit of effort to keep things running.
We've experienced the slide-out wall separating from the floor. Upon inspection, I noticed that only 2 screws were left holding the wall to the floor. The screws were mounted from an angle iron to an aluminum channel on the wall....nothing inside the channel to help hold it....just the thin aluminum.....no wonder it pulled out! I drilled the angle iron with double the holes and installed new screws. I'm hoping it will hold. I also had to add more screws to where the dinette bench screwed to the wall......it too had pulled loose and left gaping holes in the wall where the screws would dig their way around while we drove, unaware there was a problem.
This morning I happened to look underneath the unit and noticed that the angle iron holding the water tank is now bent. Once again, the engineer that designed this thing really dropped the ball. Two cross beams! No wonder it bent at the cross beam.....nearly 300lbs of water held by two cross beams. Sheesh!