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I was so happy to find Fitness Repair Parts. I bought a gym quality Stairmaster for my home about 22 years ago. I never once had any problem with the equipment except after all these years the plug that connects to the connector box (not sure what that thing is called) and the "box" needed to be replaced. I thought that the machine might be too old and that I wouldn't be able to get the part. But Fitness Repair had it. I bought it, it came in the mail within a week or so, and it fit! I will call them again if I ever need a part replaced.
I searched everywhere for the speed control knob I ordered. I was a little skeptical that I would receive the right part, since even the manufacturer no longer carried it. I received my order yesterday and installed the knob last night.