One possibility is to supress/exclude from analysis the pem and use a bolt connector. The bolt allows you to idealize the effects of the screw and pem but it might not predict failure since there have been force accuracy discrepencies with shell mesh bolt connectors. Also, the press fit strain is absent. This would cut down on the artificial modifications to permit meshing if you have a lot of pem inserts in pcbs. Plus, if the holes were made with hole wizard, the bolt connector can identify the collection of edges.