Just picked up my 70D today - absolutely loving it! 40 mile drive back home, 20+ miles on autopilot working flawlessly. Only issue I've picked up on so far is my seeming inability to change the channel on the radio. I can see other channels listed, but when I press one, or try to change from FM to DAB or AM, it switches for 1-2 seconds then switches back again. Anyone had anything like this before? Am I just missing something obvious somewhere?