Knobs w/Set Screws for Early 1990s G&L Legacy?

Hi Everyone,

I have an early 1990s G&L Legacy. It has potentiometers with solid shafts. As such, the correct knobs are the knobs which have set screws in them (not the push-on type of knobs for knurled potentiometer shafts).

My Legacy is missing one of the white "Tone" knobs. I have looked online in the usual places (Ebay, AllParts, WD, G&L, StewMac, etc.) and cannot find white knobs which have the set screw for solid shaft potentiometers. I may have missed something in my search, but I've looked several times.

Does anyone know where to find these? Also, were these types of potentiometers stock during that time period? I would think so, but if anyone has any thoughts on that, I would appreciate that, too.

Thanks.
LL