Another V5 Build 171 skip story. The specifics: Flying Magnet, Hall-Effect crank trigger, Magnetic cam sensor, COP ignition. Loaded V5 Build 171 (latest must be best, right?) over winter along with some other changes (kept the same Global Files). I have been chasing a random skip for last month. I finally read back through older forums, should have done it earlier. Reloaded V5 Build 110 firmware, all better. I'm posting this mainly to keep the topic "current". Interestingly enough, 110 is available again in the EFI software library. Perhaps there should be a "sticky" warning about this "small quirk".