Has anyone compared Mummert's 1.54 rocker assemblies to the 1.6 Harland Sharp roller-tip rocker arms? I would think that the difference in performance between 1.54 and 1.6 ratios would be negligible. What about quality? I'm looking at valve-spring seat pressure of 110 lbs. and approximately 280 open. Will my OEM adjusters/w lock nuts fit the Mummert rocker arms?