2007 450r bogging on top end?????

[07honda450rider]

i have a 2007 450R i have done a couple ice races with it this year and when i am running with my studs it likes to almost bog or choke on itself. is the air/fuel screw not set right or am i overall jet to rich, and when i am racing i cant get full rpms in last gear, i am gonna change my gearing with some different sprockets any info would be helpful, and any other tips would be appreciated thanks

[exrider12]

You to adjust your main jet. If your bike is running rich, put a smaller main in.

[miles Machine]

To rich on the main

[450rJam]

what jetting are you running right now ?
(with pipe/intake and hcII prob. 160-170 mj depend on elev.)

what size are your ice tires?
(if they are taller than stock it changes your gearing)

you still have the stock 13 tooth front sprocket?

more information will get you better answers

[07honda450rider]

thanks i got it figured out i got smaller tires and leaned it out a bit