I've had a G1 Grimlock that I ordered from ebay a while ago. It's in great shape with hardly any wear and tear. It ocurred to me that since there is a grey version of the G2 Grimlock that I could've bought the wrong version by mistake. My question is how do I tell them apart? Is there something different about the two? Does the grey G2 version have the rubsign? Thanks to anyone who posts!!