I think your pershing is the old version because I saw a 2p cable on the bb unit. This does not exist on the new version. The new version only has a 8p cable connecting the turret/upper hull with RX-18. The traditional 2p cable for bb unit is removed. The new version's road wheels should not have caps on them when you take it out of box and you need to put on the caps by yourself. So I think you received a old version tank but with some small parts for the new version. I have both the old and new version pershing tanks. The new version is easier to work with.