yep, burris signature with plasic inserts. i have several sets, but 7-08 is the biggest kicker. i do have a set of standard zee rings(3rings) on a 14" 44mag that is fine also.
didn't do anything special to them other than clean with alcohol to remove any oils etc. from the plastic inserts. i think that may have been in the instructions, can't remember. :roll:
how are they moving? sliding, twisting?
on standard rings, if they don't come with it already, i add friction pads. just any sticky back paper cut to size, and stuck to inside of the rings. don't know how that would work with the plastic inserts, but maybe worth a try. :?