Part of the beauty and warmth of a pipe organ and as a result the VPO is the slight variation in voicing within a stop over its compass. In many ways, this is why Hauptwerk is so compelling over other digital organ solutions. If your request is relative to voicing, I'd urge you to try the Hauptwerk voicing controls to get the stop to where you like it. If there is a snap or a pop or a loop that sounds strange or a slow speaking pipe or rank, this is a bug that will be addressed immediately. Voicing requests will be considered, and incorporated as appropriate.