I tell you what though, the resisters load I was using got f**king
hot! :-)

You remind me of one of my favourite quotes. Some HiFi magazine was
reviewing an amplifier with staggering (at the time) output power of
several hundred watts per channel which claimed to have complete output
protection, even against shorting. So they decided to test it by taking
the leads out of the speaker while running at full volume and brushing
them together.
"The result was large frightening sparks" has stuck in my memory ever since.
I'm glad your amp is back in business.

--
Steve Swift
http://www.swiftys.org.uk/swifty.html
http://www.ringers.org.uk