Last two Swarovskis I bought in (DS and X5) were both wearing Tier 1 rings
properly torqued
Both had ring marks, one to the extent that the mark could be felt with a fingernail running over it.
Now either:
A) the spec of the tube or ring diameter was out
B) the rings had been over torqued at some point
C) the rail or picatinny fixing were not true
personally I don't feel that rings should have enough free travel to present an overtorque situation
crank shaft bearing caps don't have a gap between the journals when torqued up
Neither should scope rings
make them properly