Not Ranked
I think that priobe has the 5-pin setup, where the "pins" are doing double-duty as lug nuts for the adapter. They have an internal hex on the outside, with a thread on the inside that engages the stud. Since the wall thickness is minimal, they are prone to cracking if overtorqued. Sometimes it's necessary to trim the hub stud so that you get complete engagement of the hex key.
Some of the early Vintage wheel lug nuts split too (since fixed with better material).
80 lbft seems a bit high anyway, and is probably not necessary when you use Locktite, but I would get a final answer from Trigo as to the torque.
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