Need some help on this one. I have an 2008 Optimax 115 on a 24 ft pontoon. When at full throttle and making a hard left turn the engine loses power ( and RPM's). The only way to regain the power is to reduce throttle to near idle then I can resume power and RPM's. I recently had the fuel line replaced from tank to engine and two coils. What else should I look for to solve this annoying problem.