My wife and I purchased a Proform 390 treadmill from Sears in late February 2011. She began having problems with the treadmill, speeding up randomly, which above all else is unsafe. By the time I contacted Proform the 90 day warranty had expired even though there is a 5 year warranty on the motor (which I feel is part of the problem). The people at Proform had me recalibrate the machine and then had me remove the motor cover and reset a reed control, (which was something a technician should be doing, but I am pretty handy so I agreed to do it... read full review »