Here is a link to the Alpha dual ganged linear pots. They are a bit cheaper than they are from Tubes and More. They still need to be disassembled/reassembled. Has anyone found these from CTS, or some non-Chinese manufacturer. I have a fair amount of scepticism about manufacturing in that part of the world. Severe polution. Dyes in rivers. Slave labor. The usually Hippy Hibble-Dribble. Small Bear sent me a great pdf of the detail on these. PM me, and I'll forward it to you. Looks like the ones from Small bear have a shaft diameter of 6.35mm. It's a very detailed schematic, and I'm not a real electrical engineer...I just play one on TV.
Anyway...Peace to all. Thanks to all your crazy folks out there for all your hard work.