Yes, it is a cool machine. A gentle giant. Approx 40 pounds of metal. And so quiet!!!
The bobbin is vertical, and in the zig-zag orientation. i.e. as a Bernina, not as a Featherweight. The finger is at 12:00 (yes, 11 in the photo as you can see it is on an angle. Sorry if the photo was confusing!) and is screwed to the body of the machine. It comes off no problem.
(I have also removed my FW gib and agree, it was a tender yet strength-required operation. This is even harder and I am very afraid of wrecking things.)
I am afraid I do not understand the mechanics of what could be causing this jam. I will be so grateful if someone can help explain. Miriam maybe? You used to have a Phoenix...?
And yes, please everyone chime in on their favourite method to un-stick stuck screws. Oil? Liquid wrench as per Christy's suggestion? Something else?
Please, and thank you.
-C.