I have 4 pv arrays 8s 7s going into 2 going into each of my eg4 6500EX inverter.i have 30 panels that are 37v 230w. master inverter reads (8 243 v 56w (7s) 230v 77w. 2nd inverter reads (8s) 200v 36w (7s) 220v 45w. numbers stay close in voltage but watts seem to change sometimes up to 350 then back down to 70etc. I have no trees and I'm in south west Louisiana. my panels face 25 east side on a 1/12 pitch metal roof and 5 Westside 1/12 pitch metal roof. inverter #2 has the 5 on the west. doesn't seem right