Here's the permanent damage. Once I put everything back together, I applied a small amount of quick set JB weld and sanded it smooth to prevent dust from entering through the lens. You can also see how the mounting barrel threads were modified at some point in time. Luckily they appear to be milled down and not hacked at with a file or something so the threads are still functional even with the flats on them. I suspect somebody had this mounted in a board with 4 bolts to hold it in. This lens will be mounted in a JoLo MK III lens board when all is said and done.