2005 Rockwood 8318SS slide issue

[ZChurchZ]

My 2005 Rockwood 8318SS dinet slide refuses to go out the full distance, It stops at around 3 inches from full extension. I have been under it turning this and cranking that with a little success and a better understanding of how things work.....and now I need expert advice.

The system is an electric motor with twin square telescoping tubes driving the pinion gears. The rack gear is on the bottom of C channels that have a 3/4inch super long threaded rod inside (i can feel them, not see it)

Ok, here's the deal, I can detach the tele tubes separately and crank on them with a pipe wrench to retract/extend the ends of the slide out. Unfortunately , only one side will extend the full distance and the other will not budge.
More information for those still reading....the side that I can move has a cotter pin thru the threaded rod to stop rotation and seems to rotate freely (if I remove the pin), the side I can't has no pin and I can't rotate at all AND it's near impossible to get any kind of wrench in the C channel to try.

Any ideas?

[ZChurchZ]

BTW, I will provide pics (clothed) if someone thinks they have an idea...

[fonzie]

You probably have a Lieppert electric drive system. Here is manual in case you don't have.

[ZChurchZ]

I wish it were that one. It seems pretty easy to adjust. Mine is pretty similar to that one but yet very different.
I will post pics as soon as I can.

[ZChurchZ]

I figured it out if anyone else runs across this thread with the same issue . There is an adjustment screw (7/8 socket head) at the end of the threaded rod I described up there ^ and you can get to it from the 'end' of the C channel. It must have vibrated in toward the camper over the years.