I am  new here . I have a 21 foot Challenger Daycruiser. 454 Dominator pump. A impeller. I have had it for 11 years always had a Holley 750 on it. Last summer had some problems at the river in Laughlin and bought a Edelbrock 750 at the local parts store. I just got a new Holley 750. What jets should i start out with? What power valve? Or should I try tuning the edelbrock? Thanks for any help.