Quoted from usandthem:The Stern apologists will tell you that your FT and Getaway all have thousands of dimples that have just sort of smoothed out and blended together over the years. Balogna.
That appears to be what happened with my original run MET pro. I noticed some dimples on it when I first got it and then the more that I played it, the more they blended together. The game had zero issues when I sold it.