Any insight on the Alignment process if it doesn't complete?

After running through the entire process, with two spins or so, the "Point to True North" prompt comes up. After setting aircraft to true north, the prompt disappears. Without any confirmation, the AF4500 goes back to home screen (EFIS). Repeated attempts yield same result. True north, then no confirmation that it was successful.

The Slaved 3400 data is slightly off as well. Pitch adj is locked out, and heading is off 4° from the AF4500, along with the wind vector. How do you match the 3400 to the AF4500, will alignment fix that?


Latest updates applied

AF4500 with "slaved" 3400 (as 2nd EFIS on Copilot side)

Thanks!