I recently purchased an 880, and by recently I mean less than a week ago. I bought it with the intent of modding it, you know, like the 361 unlimited coil, triple port exhaust, ported head, blah blah blah. But after running it at most 3 times all together to break it in, and no longer than an hours time all together, it backfired through the exhaust and cut off. Won’t start back. I’ve checked spark and don’t have any. I’ve changed plugs and still nothing. I’ve checked the killswitch, ground wire, plug wire from coil, checked for cracks in the flywheel, and even popped open the muffler to check out the piston which all seem in good condition. Could it just have over heated the coil and burnt out that quick? I’ve not even ran a full tank of gas though it yet. Any help would be appreciated because I’m lost.