[pgirardet]

I have 2006 Crescendo 8356 with 2 slides; the one in the bedroom comes out about 20” and has 3 rollers.
I had the same problem and an Email from Gulfstream said “The repair is to place ABS runner at the roller placement to prevent further damage.”
I fixed it this way. See picture. Danger: shim stock will cut you.
I got some 6” wide stainless steel “shim stock” 0.010” thick, and used Silicone sealant/ adhesive to stick it to the bottom of the slide.
I extended the slide, cut a 2X6 about an inch shorter than the distance from the roller to the outer edge,
I jacked up the slide, using the 2X6 to spread the weight, next to the area that the roller goes until the roller was free and there was a gap to be able to put the shim stock in. I cut the shim stock to fit an inch behind the roller and to about an inch short of the outside of the slide and rounded the corners. I cut away the fabric on the underside of the slide the width of the roller and from the roller to area that the roller is when it is retracted. I dry fitted the shim stock and marked where I wanted it with a felt pen.
I put some Silicone sealant on the end of the shim stock that went under the roller, slid it between the roller and underside of the slide, I lined it up with the felt pen marks and let down the jack to pinch the shim stock by the roller. I then put a thin coat of Silicone sealant all around between the fabric and the wood. I ran a bead of Silicone sealant all over the shim stock, stuck it up and put the 2X6 on it, put the jack under it to squeeze it flat with just enough push and not to lift it off the roller. I left it for about 3 hrs to dry.