I am now resolved and I have to thank the Fender staff for all their help and support. It took a very long time, but they did their job and as a customer I am happy about that. As a customer I want a great product, and also great service if needed. That is what Fender have done.
I have now taken the step from 100T to SB300. Hopefully my days with issues are now over, regardless of the step up!, and I can fully enjoy it. I am really looking forward to that. It sounds 'a million' and I can't wait to have more fun with it.
I will continue to check this thread because the 100T is a truly great amp. I was unlucky with my issues, I can accept that - it happens, but still recommend it to other people.