Nice to see you've started your "rustoration" (you should copyright that!). Wow, I've never seen a t-rod grooved down like that, or a hoop keyholed so badly. Previous owner must have been retensioning the head every time he played.I was hoping to hear some other suggestions from our experts for repairing those extra holes. I have a Supra which someone drilled to reposition the tone control. I've been looking for a good suggestion on how to fill the two extra holes.Good luck with yours, and keep updating the progress with some pics.Mike
Repair them cold. An old auto body guy showed me a trick they use on hard spots like window cladding and door ribs.
Your Supra is chromed and heat will destroy it.
For a drum hole, I recommend you get some fishing weights that crimp onto the line. The little round one`s. Lay the shell on a scrap piece of wood or hard plastic, drop a close to size weight into the hole, tap tap tap the lead into the hole and pay no attention to excess, it will polish out. If you take your time, use a ball peen hammer, you`ll get the hang of it quickly. The lead will expand and hold itself in, wont rattle and lead polishes to a shine with cloth but dulls over time so use liquid car wax to cover the shell.
Important to note,.... tap from inside the shell where the drill made a burr. maybe tap out the burr first. put a cloth between the shell and plastic or wood or whatever you use to lay the shell on. Do not use solder, you`ll have to hit it harder. use only cloth and plastic to sheer off extras. A razor blade if you`re very careful.
It sounds complicated and difficult but it`s actually long to explain and easy peezy to do.
Do not eat shell after for it now contains lead.