I've mentioned this guy before, he did the tuner in my Curtis Mathes and my 62 Zenith portable, both had stripped gears, (turned to dust more like it)
Don't know for sure if he is still in business. but he's still listed on the Web:
http://qualitytuner.hypermart.net/stangle.htm
"Louis Stangle is the owner of Quality Tuner Repair Service in Longview, Texas.You can reach Louis TOLL FREE at: 1-877-753-3204
Local at: (903)753-3204 Fax: (903)753-5658"