Our boat came with the standard suite of Autohelm instruments including depth, speed, wind and autopilot. These are tied together with Seatalk. The user manuals say there is a display adjustment, e.g., Depth instrument, "Momentarily push Depth and Alarm together..." and "Display" will appear on the screen. I want to adjust the angle of view, but for some reason I cannot get "Display" to appear. When you press them together CAL appears first, then version, then application. Raymarine technical support says there is no such adjustment. Does anyone know of a way to adjust the angle of view on these instruments? I can change the illumination level, but not the angle of view.Terry