Right good news i have had the board making the correct sounds     But there is a Pot on the board which cuts the sound in and out so im going to replace it can anyone tell me what its value is.  Ive had a look through all the info Firepower sent me and can only find one pot which is 5k Ohm but there were two style of soundboard and im not sure if its for the correct one.

It the pot just above the ioj4 plug???