Are these new SR's? Has anything been done to them? Are you sure someone hasnt changed valves etc? Typically H/S rocker arms fit very well on SR's, so I would question valve lengths etc.When you have the parts mocked up, how much adjuster screw thread is sticking out bottom of rocker? Maybe you have something strange going on, but like mentioned, I have a lot of SR headed combos out there without this problem WITH H/S too. Its more a problem on Ebrocks than SRs and that even has been resolved.