Ken is right, from personal experience I have determined many RV service personnel do not know how to properly and accurately adjust a slide mechanism. I would not attempt to DIY. If within reason, you might consider visiting the factory service department for a slide adjustment if you cannot locate a competent service technician nearby.
2000 Winnebago Ultimate Freedom 40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired, Good Sam Life member.
The Constitution is not neutral. It was designed to take the government off the backs of people. Supreme Court Justice Douglas