As I said earlier My Tron & TWD & ACDC had very minimal dimples but ST had a few that's maybe due to color tones that showed them up easier and to be honest it never really worried me I mean that ball is hard and it'll do damage its pinball :) some even put plastic protectors on to save damage. If Stern spent more money putting 10 layers of clear on then we'd all be complaining about price increase lol remember it's made for operators to put on site and make money.
They are going to be present on every game that has had a thin clearcoat. Industry standard has never had a thin clearcoat like this. I've literally stopped playing TWD LE as I'm concerned about further damage - which is a bit overboard, but I've asked other NIB Stern buyers to look at this machine before I write to Stern (third time !). Something needs to be done as it is definitely affecting potential sales.
I'd like to add that the magnets themselves have the divots. So the fact is clear that the ball is creating this issue. Nothing to do with timber etc.
Maybe a faulty PF Nino? I'm not trying to be smart just a thought as I can honestly say my WD I struggle to see many and it's a pro!