timing check with digital light

[tsm3089]

I put a new reluctor ring on bhj and want to verify timing. With 30 degrees at idle i have to put 58 degrees on the timing light to get the mark to zero. That would be off by 2 degrees ??? Or do i have to use a old light with no dial or digital dial back.

 

[johnplogii]

I believe it would only be one degree off Walt. I have to put 60 degrees on mine to show 30. 58 should be 29, it's just double, something to do with the waste spark. Stock ignition right?