Adjustable lifters keep backing off - what do u do?

[Ross F-1]

Originally Posted by Bluebell

The ones I bought are hollow, weigh 79 grams each, and came from seller "Clewwho40" who seems to have them listed all the time.
He has 11826 sales recorded with 99.5% positive feedback.

The brand is listed as "SCE 501" and the Manufacturers part number is "53-2032"
Can anyone decipher this info?

That's what I've been running for about 5 years now. He claimed (at the time I bought them) that they were "brand new NOS, original Johnson lifters". They came in a Johnson box, certainly appeared to be brand new, and included the original (crappy) Johnson wrenches. I've had no problems with them, and although a couple are not "real" tight, they have held clearances. Very suspicious that he seems to have a never-ending supply of them...