Hey Dog its been awhile. Here is where I am at: the lifter set that has maybe 10 minutes of run time on a prior eng & on the shelf HAS the plates with metered oil (I would love to toss these in if you guys think they are still OK on the bottom convex). the set in the eng now that precipitated this thread have metering plates with NO oil holes (they had no flow). I just now stopped by O'reillys on the way home & bought a single lifter (melling & I told the man 1975 dart with a 360) & I opened it up & its flat plate has NO holes (just like the ones in the eng now). PLEASE tell me I can use the 10 min run time set OR a brand/part # of some that are metered. EDIT I ain't tossed anything (yet).