Thanks for the reply. I'm still talking with Spirit about whether they will warranty the motor. If they do not, I definitely will use the links to order it.
Again, I really appreciate your response--it's getting rarer to receive customer service that you provided.
I want to write you to say thank you for the help that John gave me regarding a Stairmaster Freerunner 5600 part that I am trying to track down. While he didn't have the correct part in stock, he was very helpful in educating me about the history of this machine and working with me to identify the right part number for our broken machine.