That is odd that it's staying in park mode until a radar alert. Maybe some odd bug that crops up due to your faulty head? Try disconnecting one head at a time and see if the problem goes away. If it does when you unplug one head, the problem is probably that head.

Something else odd I noticed: in your statistics, your unit shows some of the overseas guns like Reigl, Laveg etc. as enabled. I don't see those when I go into ALP setup (North America), and my statistics show those as disabled.

Maybe you're running with an old setup file from a prior firmware version? Try generating a new one at http://www.alpriorityupdate.com/Setup and loading it.