Hello,  I am not sure if all the experts are reading this or are on
holiday.  I still need to know the spill pressure for an upright
Duo-Art at zero level with no notes playing, roll stopped.

Craig tried to answer this question but unfortunately the export model
does not have a hole in the expression box which needs to be stuffed
with felt (as far as I know). It has a cover-lid at the rear which
muffles the spill. The felt on this is normally eaten away and that is
why I need to know the correct pressure (approximately).  Can anyone
else comment please?

Regards,
Bernt W. Damm