Preserving the original paint at the ding may not be possible. (If it is I'd like to know myself)

Hi RobE30 -
I have done a couple repairs using greased up, exact fit compression blocks, clamped and rotated 360 about the tube.
It does leave damage to the paint of course, but it certainly minimizes the dent.



- If it is a minor ding, I would not bother with this sort of medicine.
- If it is not minor, make sure you get a very significant discount from the seller regardless of what repair methods you employ.