I know I must have missed this somewhere, but can anyone tell me how to tune NAV1 on the panel. I can see NAV2 and COM2 on one of the displays, but for some reason I can't see where or how to change NAV1! Also, for some reason my display does not show the strobes blinking when I switch them on. The beacon works, but no strobes! Thanks for being patient, I am still learning how to fly this fine aircraft and panel.Airbus