Just a guess but it sounds to me like the wrong set up for hovering. The Somethin Extra isn't really a hovering type plane and the 46 would be marginal with it anyway and an 11x6 prop is more a sport type prop. You need a wide type prop like a 12x4w or at least a 12.25 x 3.75 to start with but I don't recall the Somethin Extras having control surfaces big enough to hover with to begin with.