Sadly I'll be handing this amp back to the owner tonight for him to take to the local amp repairer.
I've literally not had time to go near it, on Friday we sold the late MIL's house, our house and bought a new one, so 60 years worth of stuff from the MIL's place and 30 years worth from ours has to be sorted through and re-homed or dumped between now and the 5th of June.
We are also moving from Sutherland Shire down Wollongong way so the extra distance becomes an issue as well.