I have enjoyed my serger and am learning new things with it often! Most people say that the hardest part is threading the machine. Actually, that is not hard at all, once I got it. I even have made some items and it is a great machine to have. The only thing I would change would be how the needles are accessed/ changed. The machine came w/ an Allen wrench to adjust the screw for the needles. I find this hard and complicated to unscrew while holding the needles in place or to take one out and not have the other one fall out too. I can't tell you how many times both needles fall out if I only want one, or how long it takes me to change needles. The presser foot doesn't adjust high enough to get access to the needles easily. It is difficult to adjust one or both the needles to be in place properly. Today, the screw came totally out and it fell in the machine and now I can't get it out! ughh!!!