I have a Sole F63 treadmill. It really does NOT have a ton of use. Maybe 1 year.
It did sit in storage for a year while we were moving and didn’t have a place for it at the house.
I got it back and set it up and the treadmill was sticking pretty badly.
I cleaned and lubed it. Still sticking. I adjusted the tension on it and have it tracking properly. To get the belt to not stick, i have to have the tension tight enough that the belt is actually hovering over the deck too high. If i change the tension to get the belt closer to the deck, it sticks.
I did adjust the roller up front to help get the belt lined up. perhaps I did something up there that elevates the belt?