I bought my MK1 used. It had a Tony Leach kit in it. When I received it, the kit was one of his earlier kit, confirmed by Tony Leach. In the picture attached, is the new stainless latch rod and head comparison. The older brass head is shorter than the newer stainless head. My question is comparing the two, would the older brass head, with the shorter head, have a longer lock time due to traveling farther? Thanks. Don