To get a good drop on the butterflies, do the Internet off thing and completely close the game. Power off for five minutes, then open game. Hit three butterflies, close game power off for five minutes etc. It worked for me.
Craig_za Need: sheers, reinforced frame, triple wire, transmitter(normal not powerful) Can give: fuel, bright lantern, robotic lawn mower, whiskey, cockpit glass, welder, landing lamp, copy machine, sand bag, bath towel, passengers, powerful radio, slide rule, cognac, fuel supply, jet engine, weather display, fuel additives, power source, additional radar, white gold bracelet, spare wire, smoke detector, hull parts, landing gear