Has new SBT motor. Bought 2 months ago, runs great at two-thirds or three quarter throttle go past that and engine dies. Have installed new fuel lines, new fuel switch, have checked baffel in tank to make sure no obstructions. Have takin carbs apart to make sure no gunk or filters clogged. Tried running fuel line straight into the tank. Does have 165 Jets instead of 142.5 will start right back up after it dies sometimes even have to choke it. Does anyone have any ideas?


