Facinating stuff Carl, you mentioned that my pots may not be original but when I took the loom out I forgot to photograph it for the thread but on closer inspection (see Pic ) on the vol pot it says 500k ohms x 2 and on the tone pot its got M 500K ohms, 20k ohms have a look at the pic and see if thats the case, one pot sits on top of another for both vol and tone, still dosent explain the the different shafts though. Hopefully they are original, sound wise it is great but I do not have anything to compare it too.
I have disconnected the LED wires but I would like to take the PCB out as well, would this compromise the circuit.
Thats a neat looking loom by the way Carl, good steady hand