Well if the gasket is bad you will know right away. They have markings saying top or bottom and if it is torn you will see it. If it is upside down it should be visible. I almost did that when I did my two valve. if your head is warped they might be able to mill it but you will need a different thickness for the gaskets I believe. I hope for the best for ya man. Did you prep the surface area good and get all the old gasket/gasket maker off? Did you stick the gasket on the block using some sort of rtv? I always use some to keep it in place.