MAx speed from 150 faststrike

[Tripletcrappie]

I have a 1991 stratos 274fs. Wot I’m only getting about 45mph out of the aluminum 21pitch prop I have. Turning around 5700rpms. Should I be getting more top end speed? Also idle is little rough but when put in gear it will die several times before it will finally take off. Runs real good when your in the throttle. Any help would be appreciated. Thanks

 

[Faztbullet]

What year engine? Got a jackplate? Do you fish and ski/tube?

 

[Tripletcrappie]

It’s a 91 model. No jack plate and no skiing and tubing. Just fish and ride. Compression is around 95 on all cylinders. New stator rectifier and ignition box.