Thanks - that really helps. I only have two Maggard's heads on my modern DE's but haven't checked out my old Gillette's. After switching to straights I haven't really looked at acquiring any more DE's like Wolfman or ATT so I have no idea there.
You are welcome. The Wolfman DE head takes #10X32 threaded handles just like any 3 piece vintage Gillette DE in case you ever consider getting one.