Try the following on the contacts that failed.

  1. Flip the Target-Contact sides on the contacts that are failing.
  2. Increase the Pinball Radius on the contacts that are failing.
  3. Change the Behavior to MPC which allows you to visualize the contact elements after the solution when you click on the Solution Information and click on the Graphics tab (after the screen flips to the Worksheet tab).
  4. If all that fails, open the geometry in SpaceClaim and use the Share button on the Workbench tab to create Shared Topology, then delete all the Contacts.