The Hoe has thrown spark codes a couple of times recently. Once it was spark misfire on #1, then yesterday, it was misfire on #7. This is NOT a regular occurrence, and does not happen with any frequency or with any operation or function that I've been able to pinpoint yet. Also, I cannot tell if there is any issue with driveablity - it seems to run fairly well considering the neglect it suffered before I got it. . . . Is this something to be concerned about, a significant issue, or just some cranial flatulence in the equipment from time to time? It's only happened twice so far, once when the truck started from off, and once when accelerating onto a highway. As noted earlier, it did not affect the vehicle's operation, acceleration or anything else that I could notice. Just another one of those things that make you go "HMMMM?"