As I said earlier, my '12 C5 was a one kick starter. There were just three things that caused harder, (but still quite good compared to carb'd machines) starting.
- If the bike sat too long outdoors, and the fuel turned bad.
- If it was very very cold, well below freezing.
- If the spark plug had gotten fouled. This happened regularly, I assume due to my stop and go commuter usage, along with the reported generally richer map and open loop 02 sensor at low rpms / throttle openings. Towards the end of my riding that machine, I switched to a hotter plug, however that machine's engine would also tend to ping at high speed/high load, so it was a bit of a balancing act. I always carried a spare plug. Single plug singles are very dependent on that component.