My advice would be, buy a set of genie jets i got mine from kkc, they arent advertised on their website but they do sell them so give them a call.
at least i know that when i want to go up a jet i am. i tend to think that people get hung up on jetting, and unless you are at the front end of s1 where its more critical, then getting it 95% right and concentrating on setup is more beneficial. from what i see around the paddock, most go lean to start with then work up the way. at rowrah o plate at the weekend you could hear them all popping awhen they were on first practice. ive always been told the only way you should check to see if your jetting is correct is to check the plug colour on return to the pits or after your session, this way you know your 95% on the money with jetting. there is plenty of info online to show what to look for. its all research and testing.
from what ive read, its not that easy to seize these engines, i think you would know if you were running so lean as to seize it. popping at the end of the straight is too lean, just return to the pits and go up a jet. the main jet is for full throttle, the clip position controls progression up to this point, anything before this is the progression port and idle jet.
or this is what ive read anyway and we seem to manage ok.lol
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