Easiest way to check the torsional damper bearings is to drop the sump pan and clean it. The pan gasket is cheap and you can clean the sump screens while you are at it.
If there's a problem you'll see the shrapnel all around the rear sump screen.
If there's nothing there you didn't waste your time. You got a clean sump and oil change and piece of mind.
And that works on any Rocket. Nothing like riding and not worrying.
You have a r3t which means a better chance it was assembled right
You can put her up with a 2x4 under the sidestand and remove it right there.
Also while you are underneath her clean the crank sensor with a lint free rag.