Sounds like once you talked to the manager or owner of the shop they are willing to fix the problem. I am certain no one else will be picking up a machine that isn't ready from the clerk who helped you! LOL Mistakes happen. However I do have to say, yearly maintenance(sp?) is just that. We still need to open and clean feed dogs and bobbin areas ourselves as we finish each project. I have been in the uncomfortable position of teaching class before and someone is having problems with their machine. First thing I was taught to check is the bobbin and feed dog area. How do you tell someone that the felt built up in the feed dogs is the problem, not the part itself, without offending them?