Good suggestion here! Thanks! Unfortunately I do need to be in bank mode as my whole set runs that way, each bank has a song, often with quite different sounds across the three slots – some of which are very wild/complex and oddly this kind of plain rock one is the only one that has the issue of this volume drop!  I’m also running only this pedal for a very streamlined setup so having another switch im not super keen on because like I said this is the only patch change that’s having the issue. Thanks again for the good suggestion!