open out that 2nd stage to 1.2-1.3mm
you need to see afrs in the early 12s at w.o.t at those revs
UPDATE : i tried my carb on another car and it went like a bat out of hell!
revved upto 6.5krpm in 4th and top @ 20psi, afrs didnt move much above 12.2-12.3 at very silly speeds!
im going to try another run tomorrow in my car with a fuel pressure guage hooked up. i dont think my fuel pump is keeping up, never mind the carb lol
if the carb works on another car with the same spec, the only other area to look at would be that
could be clutching at straws but worth a go