New Off-Grid Install - So Far, So Good

I had a busy last week, finally installing my big solar upgrade at my offgrid cabin. So far, everything seems to be working OK, but I've got a long ways to go to get it dialed-in (and remote monitored). That will have to wait until the next trip back. I added 8 Kyocera 215W panels (4 wired in series, 2 strings in parallel) on top of the cabin roof. I then run that 120' into my detached garage (6 awg THHN in conduit) where all my components are. In there I have a Midnite pre-wired Epanel with a Magnasine 4000W inverter and a Classic 200 charge controller. The backbone behind the system is a 800 AH 24V forklift battery, placed in a resin deck box (so I can add Styrofoam in the winter to help insulate it), with a Honda 5000W generator for backup or charging batteries when needed. I've attached a few of the pictures of the install. The hardest part was mounting the panels on the roof (using Unirac rails) - it was pretty steep, and a bit much for just me and my 8-yr old son to do on our own. But we managed, and succeeded withno injuries. After double and triple-checking all the wiring, it was a white-knuckled moment when I wired up the battery and finally flipped the switch - but everything worked (there were plenty of high-fives between my son and I). I can't thank everyone enough on this forum for all the advice and learnings over the years. I'm definitely solar-addicted, and look forward to getting it dialed in and learning more about my system.

One thing I noted that seemed a bit odd: the panels are wired 4 in a series at 26.6 VMP, that should be 106.4V. With the 6 awg THHN wire, I wasn't calculating anything more than 2.5% voltage drop over the 120' (240' roundtrip). But the incoming volt reading on the Classic was 94.6V. Why would that be so low? That last reading was in the early evening (5 PM), but wouldn't the lower sun production only impact wattage production (only showed 800W, instead of 1720)?