doing a head gaskett on my dse and noticed that the top of the block and one cylinder is badly pitted and the top of the piston is also badly pitted . im assuming that with a previous owner the head was off and it got wet for a while. also 3 pistons have valve marks on them , also noticed that all the pistons are protruding above the top of the block. i have an engine that boiled badly and cracked the head,so im planning to build one good engine out of the two