Started to look at the AD converters?
I find the A to D fault giving just over 20 degrees error such a compelling hypothesis that I'm deeply concerned when all I hear is Boeing rewriting MCAS code and recommending training.
With such an error lurking, it won't matter how many AoA vanes are replaced, or how gently the fault now manifests itself. It will still be a fault.
I'm worrying about nothing. Boeing can't be that blinkered . . . can they?