Hello I am new to this forum.. But I got a 96 Polaris Sportsman 500 And my problem is that in high gear I can’t go above 25-30 mph But occasionally i will get a burst of power/speed and it will go 57 as normal. It seems like it’s not really revving up all the way. But in neutral it revs up all the way and same in low. I have cleaned the carb 2 times and replaced the fuel filter. Please Help!!