She's a 1600p, I've had her on a Grace frame for a year and have managed to quasi finish 1 quilt - that I was going to throw away but a friend insisted she wanted it. I've been to the retailer 5 x, and Mr Stewart did do some work on the bobbin mechanism because it finally shredded the thread for him. I found the courage to try again last week and was unsuccessful at preventing thread breakage, skipping, and eventually called the retailer again. Now, he only lives an hour away, and I desperately wanted him to come and see the machine and me in action while it's on the frame, which is the only time it behaves badly. He kept dodging that, and making lame suggestions that, duh, don'tcha think I already know about lowering the presser foot before sewing, rethreading the machine top and bottom etc? I finally asked, do you ever service Charleston? He reluctantly said once in a blue moon. so I hung up, unable to speak anymore to him. Friday, sewing time and my quilting buddies all converged at my house, on schedule, and Lyn took a look at it. In the process of rethreading the top thread, I discovered a last thread guide right next to the top of the needle that I'd never seen before. sigh - it seems to be working much better now! We'll see.
Musicmaker