After 2hrs of all this, with everything disconnected, the batts were reading 12.6v at the battery and on the Trimetric. They started at (isolated) 11.5v which is close to Crowns claimed 50% SOC even though SG read 1.120. Hooked up shore power and the voltage went to 13.4 and amps around 7. WTF? If the battery is waaay down whys the battery at 12.6 isolated and the WFCO only gets voltage to 13.4 and amps to 7+? (Haven't been watching but) thought 14+v and maybe 30 amps were available from the WFCO occasionally. FWIW...I'm gonna find a 2nd SG tester just because.
I'd prefer to think I'll learn something here but it seems I'm stuck in the mud spinning my wheels.