I recently purchased LakeVü g3 Ultra, Western US edition. I am using an EchoMap Plus 93sv with the latest ver 8.3 update. When I go into menu settings and change a lakes water level, the changes are not reflected on the map. In other words, the depths shown on the map do not change even tho the menu settings have been changed. Has anybody been able to get this feature to work? What am I doing wrong?