Where do you folks purchase your hum pots from? What power rating, wirewound or ceramic, 1 turn or 10 for a 100ohm 2A3? Something low cost from Digikey or Mouser would be best.
I use a NOS 100 ohm wirewound... Clarostat, but padded with a pair of 12 ohm resistors. Expands the range of the adjustment range and lowers the effective resistance to ~5 ohms. Surplus Sales has them for $5 last I checked.