250r cool head/jetting problem
I just installed a pro design cool head w/ a 21cc dome on my bike, and my problem is I cant get this thing jetted in. Before the cool head I had a .380 main jet, and now I have a .500 and its still WAY too lean. I was told to check for air leaks, but I never touched the intake when I put the head on, and I looked it over everything seems to look alright. Any info would be greatly appreciated.
Thanks
1986 honda trx250r - silver fulbores, gueseted frame pced black stardust, duncan pc2000 265pv cylinder, esr trx5 chrome pipe and silencer, renthal fatbars, ac front bumper, ac skid plate, Razr mx tires, leager +2 a-arms, 38mm mukini carb, elka long travels with ressi's, stock rear shock rebuilt by pep, lsr adjustible +4 axle, barnet clutch, ac propegs, stearing stabilizer, and more. Still have almost all stock parts. for sale or part out
2006 ltr450 pro armor nerfs, tether kill, cherrie bomb and yoshimira slip on.
2003 Polaris Verticle Escape, many extras, Sled for sale for the right price.