Well... here are the parts. This little line up cost me ~$65.00. The cheapest I could get an HVAC repair person to come out to the house for an assessment is $75.00. Any service at all will require the technician to get parts and come a second day. (They don't stock parts or carry any kind of inventory.) A typical repair, like the one I am going to do on two machines would run in the $500.00 neighborhood! So, I stand to save a bundle if these fix the problem!!!