thanks guys......I've been doing a little reading the last few minutes since posting this and I think it could be a lack of maintenance. I've never done any maintenance to the legs or gears. Wasn't aware until just a few minutes ago that I had to. I'll get out there tomorrow and take care of that. Wonder if everything just needs lubed down. I do keep the inner tubes and foot pads lubed with silicone but wasn't aware I need to do anything else.
also....battery is new. I just replaced it this year. I will also try leaving it hooked to the truck running if it keeps doing it after I've done the maintenance.