EA to Sega adapter clips for Sega Genesis cartridge cases

One of my favorite ways to acquire replacement cases for Sega Genesis games is to buy a job lot of sports games off of eBay, because they're cheap and usually include their cases. However, EA cartridges are a different shape, and while some EA games came with "universal" cases that could hold both cartridges manufactured by EA and Sega, many do not, and that can be frustrating if you're trying to source replacement cases from sports games.

I've designed this adapter piece to solve this proble