
via phono 1337 on the AH list:
"Since im a bit of a perfectionist, I wasn't quite happy with the fact that the mfb psu-cv/gate module wasn't completely spot on when it arrived in the mail. As with anything with trimmers, chances are the post trip can move them ever so slightly.
Anyway since there's no information available on this, I decided to figure out for myself what the 4 trimmers were, so I might as well share the information for any of you that also have this module.
Here's a little pic which includes the info you need to calibrate it."