If you call the plant and find out who the maker of the slideout system is a dealer can calll them for adjustment instructions. I think it may be a Norco system. Does it have four cables; one on each corner? If so there is adjustment that can be made if instructed to properly. Cindy Hathaway is Director of Parts & Service 800.289.8787 Ext 3300. She can be of great help if your normal channel is ineffective. I just spent this week up there in training.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7