360 engine vibration

Slightly worrying feedback, the damper spins up true in the lathe! This is only gripping it on the outer surface of the damper (where the oil seal runs), so going to check the hole for any damage or anything that could cause offset off the damper.

Tonight I'll re check the crank with another DTI and more steady magnetic base. It was a bit late the other night and a only crudely checked with DTI as I was fairly sure it was the damper at fault.

I'm now thinking it could be a crank issue so can see the sump coming off! Bugger!