Mike, Gerald is right. I have the identical coach that you do. I have had to nudge the curtain both to open and to close it for many, many years now. If you had the curtain totally closed past the entry door, then you likely will need to give it a big manual assist until it starts and opens that first foot or so. I think the click means the motor is trying to pull but doesn't have enough strength to do so. Actually on mine with the curtain totally removed from the track I still have binding up in that track somewhere which is why I use the "manual assist" for the electric curtain! Years ago, I moved my curtain switch to the right side of the TV cabinet which allows me to run the motor with my left hand and "manual assist" the curtain either open or closed. Gerald is correct, the only place you could find that motor is in a junk yard these days. I just hope mine does not totally burn out or give up.
Larry Fritz