D
Im only going by what I remember seeing a few months ago. They are bad enough he isn’t playing it at the moment and that was his number one. When I get it from him I’ll have a better definition and post some pics.Define “pretty good”. It’s completely normal for a fretless fingerboard to develop grooves that are plainly visible, but actually quite shallow; these are not cause for any intervention. It’s only if/when the grooves become deep enough to begin adversely affecting intonation or action or tone that work needs doing.

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