Z400 jetting

[4trax250x81]

I am tired of beating my head against the wall trying to figure out the jetting on my Z. Its an 03, with a race cam and the 440 kit installed. It also has the FCR 39 carb with no air box cover. The owner before me told me to run 4 gallons of race fuel to one gallon of 93 octane. What are your suggestions with the jetting or some place to start jetting at. Thanks for the help!!

[hang1p]

look at the thread on the fcr 40mm carb they should be close I ran a 50/50 mix and i had 12.5 to 1 compression and hot cams why the 4 to 1 mix ,hmmm