ok heres the deal im running a stock motor with drag ported cyclinders the heads been milled 10 mil i have v force reeds 34pj carbs twin k&ns and 4degrees advance the thing ran great before i had the cylinders ported now when i nail it off the line it pulls hard but but stutters all through the gears never clearing out .
i started w 152 mains then tried 148s then up to 160s all w no sucsess i also tried moving the clip both ways nothing helped anybody got any ideas im at sea level thanks.....