Nope, not me....but I don't argue with those that do.
Back when I fooled with scopes, I used Redfield 1-pc bases/rings. Out of a dozen or so sets, I only encountered one that was off enough to pass any light. It was returned.
On the other hand, I have encountered a couple of recievers that were't quite right, but one can shim the bottom of the base to allow for that.
To each his own.
DGW