I totally understand what you mean about problems. I noticed you mentioned King Tut thread. I have a few spools and my machine does NOT like it at all; will pop the thread every couple of stitches. Doesn't matter what I do; change the needle, loosen or tighten the tension; nothing helps; it just pops and pops and aggravates me NO end. I don't use it any longer. I'm wondering if the thread is 'old' (although I don't know how old thread has to be before it is useless in a long arm). I do keep it in a covered container and it's in a relatively dark area, so no light or air gets to it. Makes me sad; it's beautiful thread and terribly expensive. I understand you being glad you're done with it. I get that way when I have issues with my longarm too. Glad to have it over with. Hope the next one cooperates better.