hello, this is my first post, I have a 239 in a 54 wagon. when I obtained the car it already had a fresh rebuild. it runs great, no leaks any where, does not smoke. however, after a couple months of use I started to get coolant in the oil, coolant level going down oil level going up. I remove the heads took them to a very reputable race engine builder In northwest Indiana, he checked them out, he did find a crack in one. the crack was repaired and he also installed bigger intake valves. he said he has repaired many heads without any problems. my engine had composite gaskets on it, much to my surprise my new gasket set from fell-pro came with steel shim gaskets? I just don't feel good about these so I ordered a set of composites from best. should I spray the composites with copper spray? I read in the forum that someone sprayed them with wd40. one last thing I would like to get opinions on, the guy that did my heads said I should set the valves across the board at .010? when I told him the factory settings he said he would still set the at .010. I don't feel good about this? I also am replacing the head bolts with correct length grade 8 bolts as one of the originals did not look good, any opinions on this? thank you for any and all input as this is my first post on the site, doug.