I’m working on a 283 out of a 64 Malibu. It was recently rebuilt to stock less than 1000 miles ago by a local garage and just broke a rocker stud of . I’ve replaced the stud but noticed all the rockers are really tight in all positions. Shouldn’t there be a little play ? I can’t find any spec for a gap size between the rocker and valve . Any help would be appreciated. Sent from my iPhone using H.A.M.B.