We try to get them out in less than a week. Sometimes The Boss will start on a machine, then come back to it several times. Sometimes we only have time for the easy machines. The more difficult ones may need several hours, and when you're in the retail business, you don't get uninterrupted time. This Saturday, I fixed 4 machines while the customer waited (2 were simple, 1 was complicated, 1 was a mystery, but I really hope we got it right), and we only had a grand total of 2 employees running the store that day. One other customer wanted it while she waited, but it was frozen and squealing. I will have to go in extra early on Monday to get it done before the store opens. Sometimes we have a machine for over a month. That's when it takes uninterrupted time to figure out/take care of the problem or we can't get the part. We only send a machine back to Bernina, probably once a year.