Torque Thrust lug nut issue

Nope unilugs use the mag style lug nut. The conical nuts are correct. Im not understanding what you mean by centering the studs before you tighten them. They should self center themselves in the seat in the wheels. How much thread do you have out from the wheel? Rule of thumb for proper thread engagement is 1.5 times the fastener diameter. So on a 1/2 you should have at least 3/4" of thread engaged with the lug nut. Also your using conical nuts on the adapters correct? Are you torquing them with a torque wrench? If so at how much? Did you buy the wheels new or used? If used make sure the seats in the wheel are fully entact. Ive seen a lot of wheels be filed out to fit metric bolt patterns. There should be about 1/4" of seating surface