well i took the flat tops off only to have a down draugft carbie spray fuel all over my car.
now the needles on the flat tops look fine not bent or worn ect but how there set may be a problem so how do i lean the carbs out with the needles. pistons look fine the carbies would most likely be out of sync though.
now for what happernes
when i put the carbies on they wouldnt idle they would fluctuate from 1100 rpm then it would jump to 2000 rpm+ but once they where above 3000 rpm they worked a treat
, now i stoped the carbs from fluctuating but pluging more hoses in ect but now its running contantly rich an when u put your foot flat too the floor it just looses all power as you said its like the choke is always on, ive also ajusted the needles but then ajusted them back to where they were but that done nothing
now i dont know if they ever worked fine but they where in good nick and in the boot of the car when i bought it no idea why the person put the down draugft carb on but it may have something to do with the prob im having
hopfuly that helps cheers pauly