Ok, I've spent 20 minutes on this and must be missing something glaringly obvious. How on earth do I set the nav 1/2 frequency on the Garmin G1000? The learning center says:To tune the standby frequencies for the NAV receivers: Rotate the NAV Frequency Selector knob. The big knob tunes MHz and the small knob tunes kHz.What on earth is the "big knob"? I've clicked everywhere possible on the stupid knob and can only get the kHz to rotate. There doesn't seem to be anywhere to click where I can get the MHz to change. The same thing happens when I try and change COM frequencies.What gives? What am I missing here?Neil

Sounds like you have found the little knob, which sits on top of the big knob. What has worked for me is to click right on the outer edge of the big knob, at about the 1 o'clock and 11 o'clock positions.

That did the trick! Man, what a pain. Thanks.Neil