OK, I think you'll like this thread then, Sheila
http://www.quiltingboard.com/vintage...t204075-2.html
We talked about the CS ability and the plates and the bobbin case. The plate is 503599, the case is 503602
I sincerely doubt that the timing issues are really that common. It's all solid metal gears down there, it should be hard to jump a tooth. My first 431 had been interfered with before I got it, the second,.. well, luck of the draw maybe. That said, timing isn't hard to set, just sort of a pain if you want to use the machine immediately.
I had 3 naps today, 1 of them planned, one was just a short one before bed.
I've forgotten how good it can feel to have a quick nap during the day though.
The unplanned one was when kitty decided it was nap time and I was joining her. I was lost. I usually have to wait til both kitties are napping before I can read or sew. Or sometimes I can get a little time in while they eat... for exactly the reasons you mention. I can't wait to see what they do with this new machine, now that it's set up.