Quoted from vireland:
Wouldn't the MAP2 metal piece of the Cliffy set have covered that T-nut protrusion anyway?
The Map2 doesn’t cover it. I have an extra playfield and if I installed a t-nut it would protrude the same. Based on where the hole is drilled, so close to the map hole, I have to believe this is a more prevalent issue than most realize. I never noticed it until I went looking for it after finding my balls were all nicked up after a few games. It is a real pain in the ass to fix. Bp has to come off along with the subway directly below. On both of my playfields, there is no orientation possible where the T-nut wing won’t protrude into the map hole.
As the hole is already drilled on the bare playfield, I assume they come this way from Mirco and are drilled by a CNC along with the inserts, etc. Stated differently, this is probably not attributable to assembly workers at JJ varying where the hole is drilled. Its my guess that JJ only pounds t-nuts into the existing hole drilled by Mirco. So, I’d be willing to bet that it is on all, if not most, playfields and it has just gone unnoticed.