Slide-out motor problems

It's not a Swintek, and yes I tested across the leads. Since it's a bi-directional motor, the positive and negative leads reverse via the bi-directional switch. Is it possible, which I believe it is, that the motor is bad and while it will run with no load, is not powerful enough to handle a load? But, in that case, wouldn't I have seen or heard something to indicate the motor was at least trying? And lastly, everything was tight and nothing seemed to be binding, at least when I tried to operated the slide manually. I did notice the last time or so that we operated the slide, that it did not seem to move as quickly as it had in the past. And my gearbox make a click click click sound when the slide is fully extended or retracted, and it stopped doing that. I think that supports the weak motor concept. Hopefully I'll find out in the next day or so when my new motor comes in. I'm also glad that working with Makarios RV that I was able to avoid paying well over $500 for the new parts from Lippert. While we struggled with bad info from Lippert, I guess since Pilgrim went out of business, internet searching finally led us in the right direction....I hope.