leaned out

[mybanshees2fast4u]

My 99 shee just melted a piston on the left side of the engine. I am running a stock shee motor, with fmf fatty pipes and silencers, a uni air filter, and adjjustable timing plate that is still set at 0. I was runnig 32:1 premix with yamalube, and i am in baltimore maryland area. I was wondering what jets should i be running. I think there is 270s in them now but i will have to double check. I just dont wanna replace my brand new top end because of some over site in the jets. Thanx

[batoutofshell]

depends on the temp the day it blew, the 270 would be fine if it was 70-80, 280 if it was 60 , 40-50 go up 290-300 or you gonna blow again its always better to run alittle fat no matter what Im going to assume your running no lid