Blue Circle gear is very nice but spending this much on the upgrade of your BC21 probably makes little sense vs just buying a used Blue Circle BC3000 or something in that category.
Fix your BC21 and sell it. The thing that sucks about it is that not many shops will want to mess with Gilbert's silicone covered, point to point wiring, custom parts, custom everything, design. So most likely the only way to fix it is to send it to Blue Circle.
If you're in US and don't feel like sending it to Canada for repair, may be Ben Jacoby fill fix it for you. He's in Brooklyn, NY.
Fix your BC21 and sell it. The thing that sucks about it is that not many shops will want to mess with Gilbert's silicone covered, point to point wiring, custom parts, custom everything, design. So most likely the only way to fix it is to send it to Blue Circle.
If you're in US and don't feel like sending it to Canada for repair, may be Ben Jacoby fill fix it for you. He's in Brooklyn, NY.