Yes I understand the roll forming process but it is done vary poorly in this case you should not have developed this thread profile all ARP fasteners are essentially roll formed and you don't see any indication of this effect, at least with the naked eye.
I don't know why they would determine the thread going in mag or alu would need the strength of roll forming the ones I have left are just perfect and could have even been single pointed I really don't know. Its too bad Ollies wouldn't part with a set
I don't know how you get in touch with Canyon Engineering but they were in Valencia you may look over these
https://www.ebay.com/p/Engine-Cylinder-Head-Stud-Insert-Canyon-Engine-Engine-Cylinder-Head-Stud-Insert/140134854