Been having some issues with my 2008 Sportsman 500 HO EFI. Back in the fall it kept stalling when coming to a stop. Finally got around to checking it out over the winter and determined that the rectifier was going bad. The voltage output jumped back and forth from battery voltage to 14 volts. Replaced it and everything seemed to be okay. Went to start it a couple weeks back and it was very hard to start. Checked the plug and the spark was pretty weak. Replaced the plug and that seamed to help. Went to start it today and it wouldn't start at all. Checked the spark and it's there, but very, very weak. Swapped out the coil with my 550 coil and it's still very weak. You almost can't see the spark. I fear I already know the answer, but figured I'd throw it out there. I guess the first thing i should do is check and clean all the connections just to be sure. Any other suggestions?