So a month has passed since my last email below with no further progress. No tracking number, no communication, no amp. How familiar.
If you've really fixed it, as per your emails of 15 and 17 September, what's the problem with shipping it?
Frustration soars again - as far as I know Bruce now has a working amp, a silver case, a stock of power valves and my home address.
Just take my money and send it back. According to his reply it is indeed as simple as that - see part 58.