Sorry for takin so long on a reply , bringin up the dino turds ,............. heres my situation and what im runing ,i have two 28 or 30 mm oko carbs ,V force 3 s,+3 crank ,cool head, uni fillter , close air box , or oen depends were im riding , FMF fatty s , power core silencers , stock timing , 14 /40 gearing , bored over .20........thats it for engine mods .........what should i be seting the carbs , and timing at you guys think...................an it only runs like this when i first start it or on and somtimes when it feels lke it .................TELL ME WHAT I NEED TO DO AND NEED thank you