proper jetting For 4,100 ft

[JrrMrrtt]

hey i could use some suggestions on jetting my carb. 2018 bms 250 crp or basically 2018 hawk 250. heres my situation does alright at lower speeds but cuts out alot at high rpms and at the end of the gears im pretty sure the jets are to big. i have a 32mm pwk amazon carb on it now i know thats a little to big of a carb for the bike but working with what i got. what would be the ball park on size of jets i should put in it im at 4,065ft to 4,330ft of elevation? or would i just be better of getting a 30mm carb and if so what would be the ball park jets to use on it. thanks in advance