Michael Kelly Dragonfly 4FL TBK fretless acoustic bass :: plane fingerboard and set up.This had a nasty fingerboard rise over the body that needed to be planed down. This amount of extensive inlay is not ideal for a fretless instrument as the wood is hygroscopic (reacts to moisture) and the pearl is not. Also the fingerboard is much softer than the pearl and wears faster. Areas of the pearl were proud of the wood and caused odd buzzes. Comment