They use Make it Sew machine repair. It isn't cheap, and no one is so don't work too hard looking around. Bob is excellent and best of all very speedy. I got my machine back in a couple of days.
Contact Colorado Fabrics or Rocky Mountain Sewing Machine and Vacuum
Don't know
No, but they have a contact who does. Sometimes he offers a class where you can being in your sewing machine to learn how to fix it.
Not sure if they do or not, but if not, I bet they know who would. BUT FIRST, look on YouTube to see if there aren't any specific little thought you can do yourself. Often that's all it is.
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