Okay Thought I'd add an update.
I resigned myself to the fact that I was overcharging the batteries and once let them get low on water and shot myself in the foot.
These batteries are still going, and seemingly with no further loss of capacity. I am not checking hydrometer readings any more, nor letting my Schumacher charger float them all night long or forcing equalization sessions. I added a small amount of water once since the late October. They are being cycled 25 to 65 amp hours a minimum of 5 nights a week, and grid power assisted only on the evening of some the cloudy days if I have not driven and solar did little that day.
I've lowered my acceptance voltage to 14.5 for an hour and float to 13.6. Non temp compensated, but San Diego weather 38 to 75f.
They drop fairly quickly to 12.4 but then level off the rate at which they decline and in this regard they seem to be behaving better than a few months ago.
I've been feeding them alternator amps by driving a fair distance in the morning before the solar has returned much into them. At 1750 engine RPM, They have been able to pull 90 amps on their rise to 14.5v. The belt starts squealing on the more humid mornings.
I parked on a few hills so my panels more directly faced the sun and saw the performance I have not been seeing since the last post and close to the maximum expected. A drive right before sundown is not requiring much at all from the alternator but the batteries really seem to hold their voltage longer that next night.
I am surprised at how much amperage these 2 flooded batteries can ask for from the alternator in the morning. They really seem to love this morning blast of high amperage, physical agitation followed by cool sporadic solar amps all day long, even when the monitor says they are a dozen A/h from full when the sun goes down.
I'll be running these batteries till they can't safely provide 65 amp hours overnight. Wonder how long they have?
