I serviced this Epic A35T Sport treadmill in Portsmouth, NH. The main complaint was that the treadmill would start at a negative 2.5% incline, rather than zero. I would also not go over 8 mph.
I updated the software and re-calibrated the machine. I cleaned and lubed the deck, adjusted the belt center and tension, over gave the machine a good overall cleaning.
The treadmill now resets to zero incline and will now go all the way to the 12 mph that it is supposed to.