I've tried vinegar, several penetrating oils, diesel, tapping pistons with hammer and block, pulling, rocking, chipped tooth on the fly wheel from a flat bar, stripped crank shaft nut with a 3 foot cheater bar - all with absolutely not a movement. I'm assuming this means pulling the motor and beating parts out? I did take the tub off - believe it or not - all by myself with my tractor this weekend. Did not damage the steering column. Took the steering wheel off with seven days of penetrating oil and my hammer and a piece of oak. Popped right off. Not the same luck with the motor. Thanks guys - jeffb