I used TinkerCad to blend the files. The universal mounts includes 3 different mounting pieces that you can use, depending on what you’re mounting. They can easily be joined to any mount you want. Be sure to leave enough clearance all around to slide into the receiver.
As I mentioned in the other thread, I had to spend some time with a swiss file and some acetone (for the ABS parts) to get everything to fit just right. Nothing unreasonable, though, and the resulting functionality is definitely worth the effort!