These well made shutters suffer a poor reputation for two reasons that have nothing to do with their excellent design:First, their odd operating ergonomics require that the cocking lever not be used when the shutter is set to the “B” or “T” functions. Forcing the cocking lever (and thereby damaging the mechanism) happens frequently when these are up for inspection at buy/sell shows or in the hands of uninstructed assistants or other users.
Secondly, they respond very poorly to the “dip in solvent and blast with compressed air” method of amateur repair. The paper product iris on this example would surely be damaged beyond repair by such treatment. They are regarded as “fussy” and, once tampered with sufficiently are, indeed, often impossible to repair. I hope that anyone observing this page would allow for the possibility that these shutters, properly used are an excellent product.
We currently do not service these shutters.