I have had to replace the brackets for the slides on my large cabinet in the 235S. I also had to restaple the facing to the frame. Several have used wood blocks in the corners to reinforce the cabinet. You might find that earlier in this thread (in the page 20-35 range).
Slide out leakage. I found a leak that I thought was on the curb side of the 235S, showing up in the storage box under the dinette. This was the result of a driver side leak at the slide draining on the slight grade that I park on the the curb side. Upon inspection there is a roof gutter spout (curved side wall model only, mine is a 2003) that drains right onto the forward seam of the slide. I replace that spout with a new one that discharges more forward and further out. I'll let you know if it works.
I also found a leak in the skylight in the bath. The curb side edge of the skylight lifted up and cracked the roof lapping allowing water to enter.
The new 2004 235S has flat side walls and no spout so that should not be a problem at the slide.