Hi all, Can anyone give me the dimensions of the slot size and location in the vent window frame lower corner bracket on a 69 B body. It is the slot that goes over the hidden allen head bolt. I’m working on one that someone completely butchered the lower part of the bracket so I welded a small piece in to cut a new slot. Thought I had one to trace off of but the only ones I have are from a 67 and they are different. I want to cut the slot before I start working on the dreaded Mylar strip. Here is a pic of what I am working on. Thanks in advance!