[geezer#99]

I did a pan on a 396 about 4 times before I used the flashlight trick. Found a pinch point at the back. Used a 3 inch hunk of pipe and a 3 lb finishing hammer to clearance it.
My aluminum pan I had I couldn’t get to seal. It got used though. Flipped it upside down and attached some wheels on it from a golf cart and the neighbourhood tikes pushed each other around on it. It got of miles put on it that way!