i have 1982 sea ray amberjack 25 with 350 Alfa one fresh water cooled wot 4200 to 4800 low hours on motor can only get 3400 rpms with 17 p prop went down to 13 pitch got close to wot but boat will not get out of its own way get lost in swells in ocean should I go to 21p to get power in ocean on...
