[uknowiama]

This is probably nothing - but it seems odd to me to press the start button so lightly and leave the engine to fire. I tend to press and hold the start button until it starts. Like I say probably nothing, just seems odd to me. Like if you were twisting a key, you'd twist they key until it starts and then release. You wouldn't just twist the key all the way round and release as soon as you met the stop.