Port side complete, one of our neater Redux jobs.
4-40 screws did an excellent job of holding aluminium ring in position after we figured out that you need to have extreme patience tightening. First attempt screws popped through countersunk 3 BID (with green lubricant). Need to tighten a little while pressing, wait a little while and do it again etc. etc. till fully seated.
Y9-07-16