A new one for me, a loose rear adjustable comb post (left/right). I tightened it down and will keep an eye on it, but If it comes loose once again I will use loctite.
I don't normally take the comb off, but it seemed a hair loose so I took a look. When I popped the comb the rear post moved freely left/right.
Have started on a 2nd 1100. Have it broken down, soaking overnight in BreakFree.