I found the problem yesterday why my Montana was acting to strange and thought I would share. Problems: Speed limit did not show in CN maps While navigating, I turn and that turn's text stays on the screen for another 15 to 30 seconds before showing the next turn. Answer: I noticed that the profile I am using for CN also had all of the other maps enabled, 100K, 24K, etc. I disabled the other maps and only left the CN maps enabled and all of the problems above disappeared. Yeah!!!