banshee350shearers

i have an 06 banshee it is stock except for shearer inframe pipes and k&n pod filters. i ride in northern indiana i was wondering where i should be on my main jets....i have 350s in now..it pulls hard until i shift into 6th gear then it feels like somebody is pulling on the grab bar, it dont want to rev out. any help is greatly appreciated...

i think 87-89 banshee had 200 mains and 90 and on had 210s