Hey guys, I'm not sure if I'm doing something wrong but I bought some bigfoot floater replacement heads for some old bigfoot floaters I found at a pond I hunt. The pair of decoys had been sitting in some rushes for 10 years since I've been hunting it, but didn't have any heads. I finally decided to check and see if they float and they did so I took them home. These are the older decoys that say "Decoys Unlimited Div. of Clinton Decoy. 2000" on one side of the keel and "Big Foot Decoys Clinton, IA" on the other side. I cannot for the life of me get these heads onto the decoy. I couldn't think of any other reason other than the style of the head where you put it onto the decoy changed from back then? Any help for a fool like me who can't put a head onto a decoy?