Lots of comments from a ways back don't age well. I have had many RC Pro's over the years for the M3E's, M3's and M3T, and can confirm this is a common issue for the RC Pro. The stress marks (not really a crack, and NOT a surface gouge) appear...
And hopefully it saves Brian from having to sell on ebay. ebay has become a more wretched hive of scum and villany than any other dirty hole on the internet. Like Brian, I also have 100% rating on ebay, but literally every single thing I have...