Hello,  I’m not so good at troubleshooting electrical stuff, so some simple steps to start before I hand off to my mechanic would be awesome... I have a JPI930, and it shows 13.0-13.3 volts pretty consistently.  If I put any draw on the system, it sits at 13.0.  I’m talking transmission, pitot heat, LED strobes, any one of those is noticeable.  Generally sitting at ~3-4 amps as I don’t have much draw.  Battery is new as of 2 months ago.  PP alternator was new from last October annual.