I was of the opinion to get the fuel supply fixed for sure before tweaking carb so that we could see how it ran with not tweaking. With tweaking, we can not quantify how much was the pump and how much was the carb to the problem. Albeit the goal is to fix it all, I like to learn and tweak my advice for the next guy. Jumping around is OK I guess because we will get it running. The poster is an Engineer, like me, and wants to learn and try and get results. But troubleshooting fuel has to be done from the tank backwards.
It is always great to learn from CarbKing at any stage.(the filling of the bowl thru the tube is really neat to know as well as the curb adjust) thanks Jon.
I hope someday he gets a new fuel pump and new filters before I go crazy.
Maybe I'm wrong and it's just the carb. I fear we will never know which. If he messes up the carb, then gets a new pump, then it still won't start/runs bad....then it's a Chinese fire drill.

Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn