Hey, not new to the forum but new to posting, I’ve been chasing a no spark issue for some time. I’ve got an ‘82 xs400 dohc. After testing I found that one cylinder had very weak to no spark while the other had nothing whatsoever. I had drove the bike to warm it up, then was in the middle of balancing the carbs as it wasn’t running amazing. It suddenly died, due to no spark. While cranking, the side that had no spark would spark once when I took my thumb off of the starter. There is at least one thread on this forum where someone had the exact problem as I have, and they replaced the ignition box and that was it. I’ve bought an oem used one, I tested my coils, bought new plugs, nothing. Could it have something to do with the points being out? Thanks for any input