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Fujinon B4 zoom drifting adjustment

PostPosted: Tue Aug 13, 2024 5:20 am
by Baz
Many years ago I had a problem with a Fujinon B4 zoom drifting without moving the rocker on the lens or the thumb demand unit.
I remember that there was a front adjustment pot on the lens to fix this but I can't remember which one it was.
Can anyone point me to the correct adjustment as my lens has about 8 different tweeks available.

Image
Baz