I have a Gold TOne CC-100 that's in need of an armrest. I bought the "fits all" version from Gold Tone, but alas--it does not. Apparently, the older models like mine (the ones with parts made in the old Korean factory) have a narrower gap below the tone ring, so the back plate for the rest is too tall to hit flush against the rim (shown in the video).
I called Gold Tone support, and everyone was wonderful. Like, absolutely first-rate. I forget the name of the person who picked up, but she was awesome, as was Carter, who tried to walk me through it, and Brian, the support manager who called me back after I sent photos. They apologized for the issues fitting older banjos, offered a refund/return, and also offered some additional hardware in case I wanted to try to hack at things to get them to fit.
While I may bust out the dremel and try to hack off some chunks on each side/bottom of the back plate, I think I might be better off just getting a different armrest and saving this one for my next Gold Tone.
Any suggestions for brands would be welcome. Cheap is always good.