I have this machine and the main thing about it is, it needs to be oiled FREQUENTLY. By that I mean, every time you use it. I know it sounds like a lot, but it makes a difference. Just a drop in each port. I use a pin point oiler. The race hook should be oiled with each bobbin change, again, just a small drop. These machines operate so quickly that they build up a lot of friction, and oil is needed. I lauged that you compared this machine to your Pfaff. I have also had many Pfaffs over the years and that is like comparing oranges and apples. Did you know you can just remove the feed dogs? If all you do is FM, then I would do that. I used mine on a frame until I purchased my longarm, and I removed the feed dogs...then put them back when I wanted to use it for regular piecing. It is just a matter of a few tiny screws...but put them where you can find them! A visit back to the dealer might not be a bad idea, you might pick up some good pointers that way. Best of luck to you, I know this can be frustrating.