08-11-2015, 11:23 AM
Ive had another look at the russion pot and it does lift the sweeper off its track at both ends . you can put a piece of heat shrink in sutch a way that the sweeper rests on it breaking the circuit . apparently you can get away with only one pot but they say don't go to the pub first before testing any valves , the original pot 500ohm is lin and the 1400 ohm is log , so I suppose its a case of playing , cheers alan me phil.
