I'm having an ignition problem that fixes itself before I can find out what is wrong. I'll be riding along and the ignition will die, no spark that I can detect with a screwdriver in the boot holding near ground while I try to restart. everything else electrical appears to be fine. 15-20min later it will fire up. I have dielectrically greased all my connections because I believed it was a water problem, because I've never totally avoided water on a ride. But now, I let my grizzly warm up and idle for a while, loaded it on my truck, drove 10miles and let it sit over night. next morning it started ran for a bit and shut off. wouldn't restart. drove home pushed it into the garage and ran the battery down while troubleshooting. hooked it up to a charger overnight and it fired up next morning. haven't rode it since. Ordered a new coil but haven't installed it yet. anyone suggest what to check next time it quits? I'll be riding with a multimeter for now. thanks in advance.