I have a Fuji 135 5.6 lens in a copal 1 shutter. I also have a Calumet shutter tester that produces the following discrepancies:

TESTED TIME 1s 1/2 1/4 1/8 1/15 1/30 1/60
ADJUSTMENT -1/3 -1/2 -1/2 -1/2 -1/3 -1.5 -1/2 Stop

Will a CLA from a reliable business such as KEA Camera bring things into agreement or is the answer in a new shutter?

Thanks,