When Schwintek first came out 4 or 5 years ago, I thought they were junk. We had numerous problems with them on almost all the RV's that used them. Well after working on them and really understanding them, the problem is in the INSTALL and DESIGN by the OEM maker of the RV's. ALL the Schwintek does is move the room in and out on the side tracks. The Schwintek DOES NOT support or lift/hold the room. The ROLLERS do that and are designed and installed by the OEM. It just pushes it in and out. If the OEM designs the wall framing and chassis frames too weak or does not install the floor rollers correctly, then the system fails. If they do not adequately build a solid enough floor in the slide room(The OP's problem) and the rollers push thru or indent in the outer floor, the system fails. They sell and install about 10,000 of these per month. They have for over 4 years. To the Poster that stated he lubes---BAD IDEA- that will cause dirt/sludge build up and WILL cause operational problems. The only lube is a graphite type spray inside on the nylon blocks the driveshafts rotate on. The OP's problem is his dealer. Tiffin responds within 24 hours to all problems to a dealer. As a Tiffin dealer, we get responses within that 24 hours on ALL abnormal requests and problems. We have fixed Tiffin slides with the OP's problem. You install a 1/8 inch aluminum plate on the bottom of the slide where that roller has indented the floor. 1/8 inch will not affect the operation of the slide mechanism. Doug