Originally Posted by purplefiend
Are you using the 206 style of needle? If you use a 15x1 modern needle it will hit the bobbin case. It doesn't need to be retimed, it just needs the proper needle
You can use the 15x1 needle but you need to have a modified bobbin case to run it. And it is not that hard to do either and you do not have to retime anything.
Billy