so i have made my 800 rmk for three seasons now and the first two it was great! then this last season sometimes when ridding my track starts to vibrate! so then i have to stop flip it on its side and take a spark plug wrench or long knife and chip out ice from what i believe is the drive shaft? im not to sure what part it is but its at the front of the track and its white and has many groves witch turn the track. anyone have any ideas why this is freezing up??