With many thanks to Alan (ACG) from sunny Moffat for some routering and a macasser ebony surround:
It all went back together really easily with no problems at all. The 1st thing I noticed that with the low pass filter set fully anti-clockwise there was a much more useable sound without bringing up the threshold gain.
It sounds bloomin' lovely, mainly in the way a Darkstar is supposed to sound. Old school?
Chuffed and Alan thank you
PS I know I've some ironing to do but single bloke, what do you expect!
Peter