i can only get 5400 wot out of my 25 fury w/175xs on a 186 and wonder what rpm i would gain by dropping to a 24 fury. no jackplate yet. should i get a jackplate first to see if i gain enough rpms or just get a 24. would a 24 alone help me fall into the recomended 5650 to 6000 range. my local dealer has told me a jp will do little for me. oh by the way i am ready for spring.