belt only stops when walking in the center portion
Our Smooth Fitness 6.45M has worked well for 13 yrs. Now the belt stops when walking on it, but I've found that if I move well to the back of where we usually are positioned during use, it will run without slowing down. As soon as I move up to the center portion, it rapidly slows and sops. I've recently lubricated it and I can't feel any difference between the center portion of the board and the rear portion. The belt appears to be in good shape and the tension appears to be fine. Any thoughts?