I have a 1986 MF255 with multipower shifter that got stuck in gear the other day. I was able to get it out of gear and the High/Low shift is working fine however the tractor goes forward when in reverse gear now. I have already checked through the fill hole that all the shift levers are free because I've had one stick from a bad shift in the past. Trying to think of a reason why it would travel forward in reverse gear. It also doesn't seem to go into neutral until i move the H/L shift into neutral where as before it would not try to take off on you if you moved the gear selector to neutral and left the H/L engaged.