I can’t be sure from the photo, but looks like you could have flipped the rear format frame around as well. (The Rotamount doesn’t work in that configuration, but if you’re removing it anyway…) That would have given you even more space between the standards.I should have removed the rotaslide to bring the back deeper into the camera body. That would put about 1 cm more distance between the standards and I think it would have all worked then.