First off, I'm not a bass player, but my son is. I'm his bass tech/roadie. He had been looking for a Thunderbird bass. Found one (2007 Goth Thunderbird) in a music store that had the output jack pushed through the body. Jack, wires, and back cover plate missing, along with some wood where the jack was. Otherwise, not a mark on it. Paid 70 dollars. Bought a jack and wired it up. Plays fine. For the time being, I had a large circular plastic piece that I drilled a hole for the jack, and used another underneath in the control cavity. He wants me to paint this bass. Now would be the time to repair the place where the jack pushed through. I wondered about 1/8" plywood, which would require routing, gluing, and sanding, which I could do. My question is should I or do I need to? Are there any Thunderbirds that do have a circular plate similar to a Flying V plate? Just looking for any thoughts here. The black plate I have on there will match the black hardware. Thanks!!!!