Quoted from Gemini2544:I just checked my 2013 JJP WOZ, no issue so if it wasn't an issue in 2013 what manufacturing process have they change 2018-19?
A fair number of the early WOZ ECLE's had playfield issues, enough that decals were sent out to cover up the damage. So, I don't think we can point to 2013 as the end of "good playfields". Must have been somewhere before that date. Good for you that your WOZ doesn't have damage!