Replacement knobs for Jackson PC1

[Econ]

Does anyone know where I can purchase black chrome knobs to substitute the gold knobs in my Jackson PC1? I purchased some from Warmoth and they turned to be too small for PC1.

[DonP]

If they look good can you drill them out larger?

[Econ]

The shafts width on the potentiometers is too big and they dont fit the knobs I got from Warmoth.

[DonP]

Can you drill the knobs so that the hole is larger to fit the shafts? I'm assuming these knobs have a set screw. Can tell without pictures.

[rjohnstone]

Hit eBay for some Jackson knobs.
Trying to drill out knobs without a proper rig is a bitch.