Slide Problem

[traveler]

I have a 2005 TK3 and the slides and jacks have worked trouble free since I bought it new. 12 years. No leaks. The RV is only used about 6 weeks a year.

But in the past year the door slide has begun, only very occasionally, to push out slowly. Comes in fine. That is, smoothly and strongly. When moving in slow, I can usually open the kitchen slide a few inches, then go back to the door slide and that slide moves much faster.

So, why the occasional (sometimes stopping) slow operating (going out) door slide? If normal speed to open door slide is, say, 45 seconds, slow would be 2 or 3 minutes.