So both of my wheelhorses went down in a period of 2 days.My C175 blew the main drive belt.Changed the belt but acts like rear end/transmission is locked.With the wheels off the ground both spin freely but as soon as they are on ground nothing,tractor wont budge. So then after plowing with my 312-8 blew the drive belt on that.Changed belt but now it doesnt want to move.Got it too back up little bit in reverse but doesnt seem to have any forward gears.It has been extremely cold dont know if that would have anything too do with it(teens to negative degrees with wind chill down in-20 to -30).Just looking for ideas or suggestions.May not be able to do anything till we get a warm spell.Thanks in advance.