2010 Sportsman 500 carbureted. Idles fine, will rev to full throttle no problem when it is in neutral or park. In high, low or reverse, a stab to the throttle or an attempt to go past about half throttle causes it to cut out like a rev limiter. Things I've done so far include
cleaned tank and carb
Replaced fuel pump
Checked the ETC in the throttle housing
checked voltage at battery at idle and revved up
cleaned all fuse holders, di greased and new fuses
tried holding the override while accelerating
Unplugged the speedometer
Cleaned all the connections under the front rack area
None of this made any difference. Anyone run into this before?