I may have solved my 301 bobbin problem. The repros are about the same height laying side by side with the original, but the edges are a little more pronounced. I took a pair of pliers and moved the edges a little closer together all around the circumference of the bobbin. So far so good. Time will tell.
star619, that machine looks to be the size of my 128, which is a 3/4 size machine, but not a toy.