can anybody help? i have a 2008 thundercat , i was plowing snow the other day and my reverse quit working properly. it will sputter and rev out and move a inch at a time as i push the override switch in on and off, everything was working fine up to this point, was minus 20 out when happened. i brought into the shop warmed up overnight and still doing the same thing. maybe my override switch is done or could it be a diode? will not move at all without override switch engaged and only moves a bit