Hi Bender,
Well, my "fix" involves using the Circular restrictor, so although it's not ideal for everyone it works pretty well. I've gotten it all to work, but "ideally" I would shave a little of the aluminum off of the magnet outer diameter ... that way it won't hit the sides.
The other alternatives is to lower the restrictor, or find a slightly less tall Male Stereo plug ... currently I'm looking into both.
I had a little setback last night, while unscrewing my ball top, I ended up twisting off my LED ... which is a big problem considering I JB-welded the stereo jack on the bottom ... alas ... back to the lathe she goes ...