So I rebuilt carb and replaced fuel pump, thought fuel pump would fix my problems. No such luck! Still stalled out when she got hot. Took apart fuel tank shutoff, cleaned and lubed o ring, knocked some dirt out of vent tube with long wire, blew long fuel line, drained tank and tried some air pressure both ways, tank fuel outlet, and thru vent tube. Doesnt allow hardly any air flow either way? What is between tank and vent tube? A really small orifice, or some sort of pressure valve vent device? Put it back together and ran her with coffee filter banded over cap, NO PROBLEMS! Was so glad to move some dirt that I never tried putting cap back on! I think maybe there was blockage at tank shutoff, valve was very stiff and difficult to turn. Looks like a major ordeal to access fuel tank???
I will try putting fuel cap on tomorrow, but I had ran her prieviously with cap loose so I think my problem is solved. Vent sure doesnt seem right though?