> I have had new tanks with fuel flow issues

Yikes.  I have new a fuel tank (JP Group from GoWesty, IIRC) waiting
to go in in the next month or three when I do my cooling tubes.

Is there any way to check or clean the tank before it goes in to avoid
these issues?

Thanks also Dennis and Ken for the tips on the fuel sender.  I assume
soapy water and mouth air pressure with the other holes plugged is
good for finding leaks?

Thanks as always,

Alex