[sambam]

I had a similar problem with my '10 Montana. The landing gear would start rising normally and gradually slow down to a crawl, like the motor was straining and power was low. Eventually, the drive-side leg gave out and the landing gear collapsed. Luckily, I was unhitching at a campground and the pin was still over the hitch. I used 2 hydraulic jacks to hold that corner up for the weekend. Turns out, the leg was binding, and I was stripping the threads on the jack screw. The shavings were there to be seen if I had only noticed. Anyway, a new leg for that side fixed my problem, and I've been trouble-free ever since, knock on wood. Hope this helps.