I'm probably tempting fate here but I had a hissy fit temper tantrum with my g940 pedals and I tried to rip the cable out in anger, I stopped myself just in time realising the futility and ever since there has been no reversal problem and it has been working for the past month.
moral to this story is that from my own experience with g940 reversal bugs, they have all been related to cables and wires rather than the pots.