Hello so I need help with my evinrude, I just bought the motor put it on my boat and went out and it ran ok but I couldn't give it more than half throttle, or it would just bog out and die, so had shop spend 2600$ on rebuilding all the carbs and I took it out and it's worse, it runs perfect up to 3500rpms anymore throttle and it promptly dies (which is quicker than before) any ideas? I eliminated bulb just stuck bear hose into fuel tank no better also played with adjustment on carb, motor model # is E150JLEDB

