My 3170 bedroom slide had that problem, it would only go out 2 inches. turned out I broke a shear pin (that's what the RV dealer called it.....). Got it covered under warranty.
I know both my slides have different type of motors. The bedroom has the high pitched whine motor. The front has a lower pitched, more grinding motor.
What "controller" are you talking about? I don't have anything like that.
JJ only, my cat went to Rainbow Bridge July 2015
I love my Sunseeker, when I'm on a trip I don't wanna go home!!!"
Total days camping each year: AS MUCH AS POSSIBLE!