Our fifth wheel was in outdoor storage for 18 months. We are now using it again. Our slides will go out okay but are hanging up when I try to move them in. I have sprayed everything I can see and have removed the nut on the end of the cylinder bar and ran it in and out several times. This helped a little but still not as well as they should. The slides are not binding but appear to take a lot of power to move. If I have lights on they actually dim when I try to move the slides. The Battery is good. Any help would be appreciated.