How to calibrate scale on 901B

The Moog Forum Modular Forum
1

I have a set of 901ABBB.

  1. one 901B provides great tune in almost 5 octaves
  2. another one is almost the same
  3. but a third one doesn’t track well (almost half tone in 2 octaves). Is there any internal calibration that can help with this?
    Thank you