E3D V6 hotend retainer clip for QuBD One/Two/ThreeUp Printers

QuBD apparently now ships E3D V6 hotends instead of anUbis. I saw E3D in action on a friend's TwoUp and it works so much better than anUbis that I also made the change. E3D has a much bigger groove than anUbis, so the stock mounting mechanism with two screws results in wobbling. I used tape to fill the groove, which worked fine.

However, I print a lot and have found that my E3D parts become loose every so often. You can kind of tighten it in place, but it's cumbersome and places strain on the