Sorry that you have a 14 hour day ahead.....I know it's rough when you have problems like this and you don't have time to focus on it. It wears on you.
I have never used that particular combination but you are probably onto something. Your logic seems good.
It still would be easy to jet up a couple numbers all the way around and take it for a drive. Lot easier than going through your fuel system.
To fastd, I wouldn't encourage throwing big numbers of jets at a carb in order to richen it up. Making huge jet adjustments is an indicator that the engine is not efficient or the carb is too big. If the engine can't suck hard enough to create a strong signal, you will find yourself adding more fuel to try and compensate.