So I need some valuable advice, not asinine comments. I have a 383 that I stroked to a 496. My problem is that the block was decked so bad that the pistons are .023" out of the hole. I put on .060 cosmetic mls head gaskets to bump up compression slightly. Problem now is exhaust valve is hitting the piston. I am not sure what to do. Do I get a thicker gasket? Do I start over with another 383 and new machine shop. Or do I eat the almost $1900 in machine work & pistons and start over with a 400 block. Any viable help is appreciated.