I have a BT-99 right now with the original adjustable comb. It is the newer one with the screw through the back. I personally do not like how the comb works, and find it to be a bit cheap feeling. So, now that I have the ability to machine my own adjustable comb, I am looking to do so. I have all the drawings done, I basically plan on making traditional style comb hardware, just making it so it will fit exactly into same space where the original one was. Since I haven't gotten any chance to look at examples of what a normal adjustable comb looks like in person, I figured I would ask on here. From pictures, do the posts just screw into a nut underneath that allows it to slide back and forth in the slot? Then I am curious as to why everyone makes everything out of brass, I would think something like stainless would work better for the posts as it would hold up better to having a set screw tightened on it. Any help is greatly appreciated. Thanks, Josh.