Whoever did that with the Lubriplate must have used WAY too much. I would think that a gear type pump would develop enough suction to pull the lubriplate thru the screen, unless there was a leak somewhere in the suction piping to the pump. Had another thought that STP Oil Treatment might make a decent assembly lube. It definitely stays where you put it and will eventually mix with the oil.
I used lubriplate on my pressure oiled 216, but didn't overdo it. Just a light coating on the bearing surfaces and a dab on each cam lobe.