my sf2 wont accelerate too fast... infact it mas much faster when i had it stock just with zx leo vince but i had to change the carb n variator, so i have motoforce carb with 90 jet, 7.5g and 5.5g rollers mix and a motoforce variator, my ped became quite slow, it usually dies when i give it more revs straight away (not when im moving just when im standing still and rev it too much) it seems to be better with 90 jet as i had 60, 70 and 80 before... i still have 8.5g rollers if that helps... so what should i do to make it accelerate faster and stop dying at higher revs?