Home / Forums / Vintage Melodicas / Vintage Clavietta issue / Reply To: Vintage Clavietta issue Reply To: Vintage Clavietta issue September 4, 2017 at 5:01 pm #9246 Alan BrintonParticipant Some vintage instruments take no more air than current models, Pam, but some take a lot more, even if they’re not leaky. I have a Hohner Professional 36 that is tight, but that instrument simply takes more air than my lungs are good for. My tightest Clavietta is still leaky. I haven’t gotten around to trying the caulk beading on it but have used that for some other applications. It’s pretty easy to apply. I have tried using silicon caulking (gasket builder, actually) but without success. I’m off for a few days in a bit and probably will not be on line.