Thanks for posting. That makes a lot sense. I am hoping to get the slick tricks in the mail today and get some target time in to check them out. The sad part is that I am a machinist doing tool/die work so maybe I should have looked into the design of the heads before I started posting, but Im glad that you did. So in the future I will know to look at the design and not the reviews. Machining the aluminum head the way you explained cannot be good, there is no way muzzy could hold a tolerance anywhere close to the slick trick ferrule. And I did read all of your post but when you started comparing of the muzzy vs. slick trick machining process I couldnt help but laugh because I machine for a living.