All excellent ideas. I’m concerned about then carb too. I’ll open it up and check where the float sits.
I know the pump and in line fuel filters are pointing the right direction.
All my connections are super tight. When priming the ball with no motor running there is no leakage of fuel anywhere.
No kinks in line and replaced line from fuel pump to carb and from engine to pump yesterday (pulse line), so I know they are clear and good.
When I pump the ball I can see gas swirling in the carb glass bowl, so I know there is flow.
Since the only moving parts in the fuel pump are the diaphragm, I feel confident the pump is not the problem. I had the issue before and after replacing the gasket and diaphragm.
Clearly a fuel delivery issue. There is always the carb to check and recheck.
I feel the lines in the motor are sound and tight.
I feel the pump is working as it should.
I removed the carb filter as a source of restriction. I have an in line filter that is new.
I’ve replaced the gas line to the carb and pulse line.
So all I have left is line from tank and primer ball and check carb. Also clean barb from engine to pulse line.
If I do the tank directly to the fuel pump test, do I need the tank above the motor, like sitting on the dock?
Thanks so much for everyone’s input. I know you have all felt my pain at some time in your lives.

I’ve been doing all the work in the old aluminum fishing boat while the wake boarders are making tsunamis. It’s a lot of fun. The tank is where it normally is. The ball is facing up.
Thanks for asking, though. Good idea.
I’ll do the carb inspection and direct tank experiment tomorrow when the lake traffic dies down.
Fingers crossed!