The shop I used to work for would buy the PBM billet roller timing sets for small blocks and they always had play. I bought a rollmaster setup from Hughes and it was a pain to get the cam gear on the cam it was so tight. But once it was one, it was perfect. I know the PBM billet setup looks like a really good timing set, but they start loose. I think it's probably the same timing set most of the manufacturers use under their names so it is best to go with a well known, name brand.