GrassGuerilla
Olympic Piss-reving wanna be.
Swapping parts over does kinda get old. And I hear ya about leaving the running one the hell alone. But here's my take. You know you have good parts right there. In an hour or two you will almost certainly have it pin pointed. Then order a new one. The old order, wait for part, and pray that's what you need gets old too. You have a spare carb, a carb kit used up on an old carb... How many more spares you want? Nothing wrong with hording.