Yes, we were discussing that as part of the fix. Thank you for verifying that for me. I'm not sure how I'm going to make that repair at this point, since I already cut it, but I'll think of something.
I had the top of the kidney plate aligned with the top of the abdomen plate in the first place, and when we started to try and fix my belt problem, that was the part I was really reluctant to change. I tried a downward angle at first, but since I basically have no butt, the belt kept slipping off. Alas, sad but true. I didn't have anything holding up the back, so I'm going to take your advice and tack it up in the back as well as the front first, and adjust from there.
Thanks guys. You're the best.