If you have 1117 firmware on your november batch and you think it is causing issues id roll it back. I have found numerous problems with the 1117 firmware and have removed it completely from my environment.
Yes & no.....i had success rolling back the firmware for a unit from Aug 17....but
My Jan 18 units absolutely do not benefit....in fact ...flashing the April 17 firmware causes the temps to jump 10c while freq and hashrate is exactly same as Nov 17 firmware..
So I back to the Nov 17 firmware on all of my units from post sept 17
My best luck is with the July 17 firmware but can't find a copy of it anywhere..
...Ditto for my 14Th units from Dec....they do just fine with the Nov firmware and worse (High temps/more amp draw/less hash if rolled back).