Found I had wired the mechanical relay to be closed when the amp was on
Any way, I have replaced the 10,000uF capacitors and the 25watt 30ohm resistors (which popped).
However, approximately 60% of the time, when I turn the amp on, I get a continuous arc across the mechanical relay terminals (link below).http://i.imgur.com/Jl1Zp.jpg
Secondly, you do mention that the 22ohm resistors get hot, however mine seem to smoke and melt electrical tape, is that normal?
Finally the V+ and V- relative to ground are only 5.1 volts so something is seriously wrong here. I will pre-emptively accept blame