I've got over a dozen scopes mounted with Signature Zee rings, none have been a problem, love em, won't use anything else if I have a choice. I have used socket head screws on some of them to make tightening them easier, but I don't feel it's necessary, just convenient. I have since found that using a chapman screwdriver and the ratchet handle works extremely well with the Burris slotted screws.
Having the option of using the offset insert kits has made mounting 2 scopes on rifles that were not close to having the reticle centered at mounting has been a big plus. You can literally center the scope reticle then adjust the insert position so the rifle is bore sighted without ever touching the turret adjustments....Love em!!!