Quoted from joey__p__1966:

For what it's worth,
I have worked for a chemical company for 30 years , making automotive and industrial high performance clearcoats. I am not a chemist, just represent in a technical capacity this company. I am going to make a guess as to what is going on behind the scenes, it would explain the delay in responding. It wouldn't surprise me if a paint company is trying to figure out the clearcoat issues and meet the quality demands and production demands on dry times and hardness. The newest technology is UV dried clears, and they are more brittle than yesterdays acrylic urethane clears . Brittle is bad on a wood sheet that gets beat up by a steel ball. The UV dries super fast, like 5 minutes total dry, no heat to damage the wood or inserts, very attractive to production lines. The Urethane clear is either air dried or heat cured in about 20 minutes, and I'm sure it's low baked ~120F, due to it being wood with plastic glued in inserts. I would not be surprised if some changes in technology is being worked out right now, and trying to figure out a way to meet production demands and provide a suitable clearcoat. I figure Stern ( actually the paint company) is testing different formulas looking for a solution. Just my thoughts, don't have a dog in this fight, just sharing some insight from my perspective. I may be way off and no where close to what the process is, but I am making this guess.
BTW: the white edge on the insert is most likely delamination. It's where the clear has come loose from the substrate and is no longer bonded. The swelling, expanding and retraction of the wood at the insert may be the culprit, and the clear isn't flexible enough to make this minor movement without coming loose. I'm sure they will figure it out, and hopefully soon, as I would like to continue to buy new Stern pins, as they make some really cool stuff these days.
Please don't bash me for my ideas, as I said, it's just a guess from someone in the clearcoat business. But it may help some folks understand just a little about clears of yesterday vs the UV clears of today and why it cant be fixed overnight.
JP