Not offhand. Anyone with a lathe could turn you one but the bigger issue would be a reamer big enough to trim the hole...
Hi. Then take the measurements and someone surely will turn You one. Your Luthier does have a ~2" reamer, does he? If the hole isn't true, a larger plug won't help much without reaming. Regards Sam
I have about 75+ endpin poplar/maple blanks used to re-do bass endpins. PM me if your interested. Basically, have the endpin hole reamed out and then glue in a blank and start all over new. The blanks range in size so let me know what the large diameter ends up as and I can send you a few to try for fit. They are all standard bass taper. I hope you can get a PM thorough to me. Sometimes I'm not sure if I have set up my membership correctly.