Has anyone ever changed the legs on their Harris bipod(s)? I've got a 9-13" swivel with leg notches and a 6-9" that has leg notches, but doesn't swivel. I'd like to remove the legs from both of them and put the 6-9" legs on the swiveling base and the 9-13" legs on the non-swiveling base. I messed around with it for a moment this evening and the legs are under quite a bit of spring tension. Rather than go for broke and screw something up that I won't be able to get back together again, I figured I'd ask since the computer is only a few feet away. Has anyone ever done this before and have any pointers or ran into any problems that aren't readily visible?