This appears to be a common complaint about slide-out rooms. The rollers below the slide floor are supposed to bear the room weight and roll over the carpeting or other covering. Often they make severe wear tracks on the carpeting/floor covering. Ours was so bad at purchase, the rollers actually cut the carpeting; requiring carpet replacement in 3 months of purchase.
If you are a DIY person you may download the installation, service, troubleshooting manual for your model and make of slide mechanism here: Aero-Rv.com - Aerolite Ultra Lite RV Travel Trailer and Expandable Hybrid Campers
, under "powered slides-beds". I have decided that most RV service shops personnel, actually do not know much more than we do about adjusting slide mechanisms.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"