WOW!! Lots of good info guys!! Thank you...Thank you!!
Turnerfarm... I don't think the charger was on, for whatever reason. Voltage didn't budge from 12.0 for an hour. "shrug"
I decided to "get-after-it" on the battery tray. I cut out a small triangle piece of the gusset that was crushing the Flex conduit I mentioned. Then, was able to raise the conduitit above the batteries & tray assy to zip-tie it in place. I also cut & re-routed wiring for a light in a small compartment forward of the batteries. There was also a small wiring bundle for the AGS controller, but didn't want to mess with that one too much. I was able to tuck it tightly into the corner of the battery tray. I called that good for the day and had some lunch, then called 5- 6 places looking for 2 more Interstate GC2's. Costco had them for $83 ea. Successful day.