I will see if I can get Jared on here, but not sure how much of his exact specs he is going to share, a lot of it is proprietary and posting it up would make it easy to copy.
I can tell you that out of the box promaxx heads have a lot of issues that need to be fixed, not including the proprietary specs that are used.
I have also seen a lot of guys selling "their own proprietary specs" and had customers buy them when KDD was out of stock. Lot of them ended up sending me pics of what they got and I could not believe what they had been sent out. Literally cant believe they got sent out the door. And that is just what I could visually see through a cell phone pic. Seems like half the industry does not even know the proper placement for the oring groove