Question about a old mad bypass repair

Ok, thanks, I will need to review the work done years ago, but I believe other than the ATO fuse holders we used that we followed the " mad bypass" as it was posted on this site, we used 10ga wire so maybe we should increase to 8 gauge and go with maxi fuse and 50 amp, this is what I was thinking is maybe there is a small spike now and then causing our 40amp ATO to blow intermittently, I'll need to re-trace what we did, thanks for the advice as always.