Hi Kevin, As an Auto Mechanic, now shop teacher one neat trick I learned from a friend that restores old cars is to heat the item up enough to melt parafin (candle) when you touch it to the object you heated. The parifin melts and flows into the threads and helps loosen them up. The "BLUE FLAME WRENCH" is magical when something is really rusted and or frozen but BE CAREFUL about applying too much heat as you can damage the item you are trying to repair. B.T.W., Thanks for the help in pulling out the speeder engine. Good luck! John