I have an 89 Invader 265, has the Volvo-Penta chev. 305 v-8, with a 280 outdrive. In neutral, it will idle great, run up over 6,000 no problem. Put it in gear, and it bogs down at about 2500 to 3000 rpm. Will not get up on plane. I have completely replaced the fuel system, to include new...