I recently got an HL KV-1 with the Asiatam hull. The stock sprockets require a long axle box, but the Asiatam sprockets require a short axle. I swapped axles on the standard metal boxes and it worked perfectly, but I want some steel 3:1 boxes. I put my Panzer III box in and see that the bolt pattern matches and axle sticks out the correct amount, but I am not sure the differences since one is a puller and one is a pusher. Are the motors wired differently between the boxes? Since the PIII boxes will be sitting in there backwards, will this make them sync up with the transmitter controls?