You aren't making enough power or running quick enough to be having fuel delivery issues with a .135" fuel inlet seat in that carb. Not sure what's going on, but for sure I would check everything before the fuel pump to see if there is a restriction someplace.
Some fuel tanks uncover the pick-up quite easily at the track as most are front located and the back part of the tank has a long slope to it.
The T-II intake isn't helping things much, unless you have a lot of gear/converter the carb woln't leave hard and take while to get into the good power. The T-II is also set up with a square flange and requires an adapter from what I can remember, another potential "choke" point in the system.......Cliff