'89 roller-cam LA 360 w/Magnum heads - new roller lifters not pumping up

A few photos - and I think I now know what I'm looking at with the Magnum lifter photos.

On top is the super-squirter lifter. On the bottom is one of the other 8 lifters from the passenger's side of the engine (I have not taken one of Sireland67's lifters back out of the engine just yet, so nothing about those yet).

Both seem to be made of the same bits:





The main difference seems to be in the inner body. It's impossible to see here, but the bottom lifter uses a check ball, while the upper has some sort of plug on a spring (which I can't seem to move):



Also, the reverse side of the plunger now looks seems to resemble what Mopar1us was showing in the photo. Both resemble the unmetered version (though the one on top sure doesn't act like it).

-Kurt