I installed an MP 2992 nos cam advertised to be .474 lift. Went with Mancini rocker kit 1.6 ratio. The box arrived marked 1.6 and they are grey as expected. I put washers in a hyd lifter for checking and get only .465 lift. The lift directly on the cam lobe is .317, as expected. I have a ball and cup checking pushrod in place with heavy springs so could have a slight amount of flex. Mancini says call Harlan Sharp. What could be the problem other than wrong ratio rocker.
