Hi Paul thanks
I am pretty certain the initial votage checks were all good and both boards had only the odd 1 or 2 volts difference between them. The amp has been working faultlessly and sounding superb for the last 3 months and has been getting a lot of use
I have reflowed the STP cable at pins 4 and 5 and the jumper wires. The resistor values were also all correct but I had to pull a couple that I could not see the codes for (I normally ohm every one out to check before installing) and when doing so I busted the 301 ohm resistor (R1 B side) I heated one side as you do and it came out no problem but when I flowed the other leg gave a gentle pull and the end of the resistor fell off
I've pulled a few resistor now on different projects and this was the first one thats busted I dont know if it might have been damaged prior to my removal at all but it fell apart pretty easy and I will need to find a replacment before I can check my voltages again.
I do notice my tubes pins in the middle C socket are not a very tight fit when turning the amp over to do the voltage checks, loose enough that the tube is at risk of falling out if I'm not careful.
Cheers
Jamie