I guess it's pretty easy to explain though now that I think about it. While TFing your guy into Battroid you need to get the swing bar in there only part of the way while simutaniously moving the little cover over it and pushing the hinge part of the swing bar down into the groove on the cover. Once the hinge part is part way into the groove then you can move the swing bar the rest of the way into the nose cone while pressing the cover down. Be careful though not to apply to much pressure. It is quite a process but the results are WONDERFUL!!! Good luck.