[Gianluca Barbaro]

Thank you David, the augmented length and mass of the lower reeds surely account for a longer attack transient and higher required pressure. Working on articulation and air column support can definitely improve the situation.
But what I noticed is that the situation is apparently very similar to a melodica in need of re-gapping, so I wonder if it’s just “same symptoms – different causes -> different solution”, or maybe be gapping could be part of the problem: after all, it looks like the Hammond bass is “slightly” more responsive, so there must be room for improvement on the Suzuki model.
gl