Sorry Andrew, I just now found your later posts with the brand etc.
By the way, shift voicing made a big difference on the Steinway I recently did also, even when the action was not in its shifted position.
I benefited from your story about being hesitant to "contaminate" new hammers, and the way you handled the concerns with your customer. A lot of times I figure our job is to take a musical problem and translate it into a technical problem, and then solve it the best way our training and experience tells us, which is what you did. Hope that's not too off-topic.
Dan
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