I have a 2004 Dynasty with 3 slides and there no rollers under mine. If you look at the underside of the slide-out you would be able to see some wear from the rollers - there isn't any on mine.
I have 2004 Dynasty and needed the diagram which Monaco (REV) sent me electronically. If you haven't tried them yet just call them, they may still have it on file.
MM RV Electronics may be able to help. M&M RV Electronics|RV Electronic Repair|Authorized Dealer|Ohio|Florida (mmrvelectronics.com)
They've rebuilt several circuit boards for me.