during the first run this season my apex would shut down unexpectedly. would turn over but would not fire. I'll keep this short and say that I believe the problem was that I over filled the oil level. During one of the shut down sessions in a attempt to put gas directly into the throttle bodies I discovered lots of oil in the air box so I checked the oil level and it was way to full. Adjusted the oil level and no more shut downs. just want to share this experience incase anyone else runs into this problem.