Thanks all again, I'm going to borrow a known good carb at the weekends and try that, I've got the vacuum hoses to block off and see what happens, both the servo and trans ones, I'm gonna do one at a time and see...
Mixture screws are at 1.75 turns out, still have fuel puking out and stinging eyes. And it won't rev.
Stock (new) mechanical pump.
Timing light is also going to be borrowed.