10-1-2011 I purchased a floor model T5.3 Treadmill from Sears. They had no Manual to go with it - said I could get it on line. I can't seem to locate it on line. It was missing the Magnet Key for it to run. They said any magnet would work - NOT. How can I find a replacement Magnet Key? Thanks, Doug Cudworth Not sure of the Model- where do I find that on the machine?