So I ordered what I thought were going to be replacement knobs for these god awful knobs that EMG ships with their preamp. 3/4 are a great fit. The Gotoh VK15T / VK18T are great for my 2 concentric pots. The 6mm AllParts mk-3330-003 fits great on the push/pull volume knob that came with my MM5TW-X. But the Active balance pot...what the hell is going on here? The 6mm mk-3330-003 is too small! What do I need to fit this pot?