I have a 1996 Johnson 60 hp (model J60TLEDR) on a Lund 1700 ProAngler DLX that starts up and idles fine. When put in gear, it runs fine up to about 50% of the max throttle and then once I go above 50% max throttle, it bogs down and just stays around 2500-3000 rpm. I replaced the fuel filter...