Ok so i have a 01 660 with proflow and foam filter, stock exhaust with baffel removed and air lid on, i has some holes in the air box lid, but very small im not really sure why they are there( preveous owner) but there are maybe 5 1/4 in holes, like somthing was mounted there. has 155/150 jets with 25 pilots and vitos needles clip half was up. The fuel screws are striped.... i have no clue how to remove them now and i think they are my prob. but anyway i installed the vitos pilot jets and needles the bike was poping under decel and seemes slugish off idol and in top end. Well now the bike is alsome in the top and mid is not bad but somtimes it hesitats. and cold it will start perfect. once it is warm it spits and studders and then finally starts. Had a horriably day on the trail today, friend had a flat, anouther friend ran out of gas, and my bike had to be pull started at the end of the day. on the way home down in the low rpms it ran like a$$ poping and cracking i have no clue what happened, but it reminded me kinda of fowling a plug on a 2 stroke Im in the process now of checking valve clearance just to rule that out i think it may be getting 2 much fuel in the pilot circuit but with stock pilots its not enough and 25 is to much, i need to get the fuel screws out i have vitos to put in there, i just don't want to go drilling them out if i don't need to. any help guys??