Here are some pictures, I've replaced the mounts of course. And the vibration is lessened now of course. You know what they say about boiling a frog ... I think the vibration was getting worse slowly over time and I just didnt notice that I was being boiled to death ;-)
I checked out as much as I could (with boat in the water) from the coupling aft. I could not find any damage but I'll be hauling her in a month or so for the final word.