im new to the site so forgive me im trying to figure it out. but i have a mercury 225 promax. it has 25 hours on full rebuild. ive replaced almost every thing on this motor. the ecm, stator, rectifiers, switchbox, high pressure fuel pump, injectors have been sent out and been cleaned and flow tested. the reason im selling the motor is to upgrade to a optimax and as of right now the promax will not spin over 4100 rpm and the mercury dealer here cant figure it out. but the motor runs perfect until that rpm. im sure its a small fix just no one around here can figure it out. so it being a sick promax im asking $5000 or best offer im located in jacksonville florida. thanks