Do you know who the manufacturer of the slide mechanism is? It might be in your owners' manual. I am a factory certified HWH service center. They are 100% American made products found in the RV industry....slide room mechanisms, leveling jacks and air suspension components and systems.
I might be able to help if you have one of these systems, but it is really hard to diagnose a problem like this long distance
. Let me know what you find out.