William Mangum You can roll your pushrods on the small diameter on glass or any flat surface to tell if they are straight. Once bent you can straighten them bot there never as strong again. If you have 2 cylinders stuck not seeing how you bent pushrods ?? Marvel mystery oil is a Walmart buy about 5$ a quart every day. I saw your truck picture looks good I have saved them that looked a LOT rougher than that. Other things can lock your engine,sometimes just one bolt too long,or rodent nest,driveline,mud dobber nest,starter engaged. Another thing I run my chain saws on airplane fuel and 32 to 1 mix to prime with is some added lube for sticky engines no ethanol. Good Luck you'll get it lit off.
