slideout jamming at full out

Mine had been jamming on retract, just giving it a little push would allow it to go on in. I got underneath, cleaned everything up, made sure the bolts were tight and checked the alignment as best I could, has worked well since. Mine's a Powergear. I think the worst problem was the driveshaft was kind of loose at one end, think it was trying to **** (can I say that?) a bit. New bolt installed.

I'd guess you're going to have to get "under the hood".