i have an 06 foreman 500 it has a dynojet kit with a 170 main jet and k&n filter kit bored 1mm over on the 1st ride after rebuilding it when i go down a hill in 3rd or 4th gear it acts as if it were kicked into netural then will grab all the sudden and sound like the tranny is coming apart or if you tap the gas it will go back in gear anyone ever had one do this before thanks for any and all replies