Rockola Stepper setcrews

FYI for anyone who may run into this-I had posted sometime back a question about how to remove the setscrews from the collar on the stepper gear shaft of a Rockola 1765 stepper. After a lot of searching i finally found out that the setscrews require an .076 Bristol 4 flute wrench. Found one on Ebay and surprise- it works. Then I happened on a 1765-2 stepper and in attempting the same procedure, it didn't fit. I found after some cussing and experimentation that the setscews are standard allen screws. So- no matter how similar things may be, it seems there are subtle differences.

Now i just need to get new plastic gears and I'll be ready to go.

Here's a place you can buy Bristol wrenches:

http://www.mgs4u.com/Bristol-spline-L-keys.htm