What RPM's should I be getting on my "new to me" toy? Took it out for the first time yesterday with 2 people (big boys) and full fuel tanks. Ran it on a zx200 skeeter. Great holeshot and acceleration but from 5000 rpm up it felt "flat". It could be me, as Ive never run a 4 stroke motor. 5600 Rpm was max at 63 mph. Prop is a T1. Thanks for any replies.