Hi Jørgen I'm not sure they are all that standard. Bichords in the bass vary on Hamburgs for example, allowing for some compensation for differences in string diameters. I dont know who else does this. The usual way of dealing with variances from a regulators perspective is to simply squezze / clip / or otherwise manipulate the felt so that all damper heads end up at the same height. Why the need for customizing if I may ask ? Is there a real market for this ? Cheers RicB
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