I removed the bolts and screws holding my oil pan on. It will drop quite a bit at the rear but won't quite come out from between the engine and the Mustang II crossmember. I did not have time to jack the engine up to get the pan out. I didn't think to turn the engine and see if that would allow it to drop out. The pan will drop enough that I could get my hand in the sump. There are no loose pieces in the pan. I could check the back four rods for excessive play. There is none.I can move the pan around enough to see up into the back cylinders. The piston skirts that I can see appear to be intact and I can see no cracks. How does a 235 type piston crack , usually. Should I be able to see the bad one from underneath once I get the pan down?Thanks.