Hi,
it may very well be that the SH-101 calibration is off. if it plays well via CV, it is probably the D/A that needs calibration.
The service manual explains the calibration procedure quite well. To not add more confusion, I recommend to
– disconnect the pitch bend wire from the SH-1oh1
– perform the calibration as in the service manual
– reconnect the pitch bend wire
– perform the pitch bend calibration