I'm new to a dual carb setup but not new to carbs in general.
A little history on this 750. She's a 95 and the previous owner did an ear shave. However after completion he wasn't able to get her going again. He decided to let it go because he was over his head, his words. Now I've been able to sync the carbs and got them both primed. She'll run for a few and die out. Both lines are out of fuel at this point so I know it's a feed issue. I tested and cleaned the petcock and both sides flow perfectly. One cylinder runs (rear) but the other is weak and doesn't seem to run. In checking everything I found the front carb blows while the rear sucks. I'm fairly certain this is my flow issue as the vacuum, for the fuel, comes off the front carb.
My question is 2 fold. First is this normal? And second is not, fairly certain it's not, how do I go about fixing it. What would cause this? Oh also I know he had a leaking diaphragm, not sure which one, which he replaced.