Warwick Potentiometer Dome Knob Black

Last year I decided to give a new life to my oldest guitar - a Washburn with a very pleasant/playable neck.
I changed all hardware - pretty much using it as a guinei-pig guitar for testing new hardware. It ended up a brilliantly sounding guitar with Schaller loking tuners, Babicz bridge, Seymour Duncan pickups.

Unfortunately I thought about using stacked pots - and stacked potiknobs.
PROS:
- sturdy construction, looks good
CONS
- they did not match the only 250/500 pot found in store (from AllParts), had a hard time tightening them
- the two pots (the ring and the knob) hardly work simultaneousely without influencing each other, ie: I cannot change volume without affecting tone and vice-versa

Bad choice from my part, I wanted to avoid drilling a new hole, now it seems a much better solution