Lifter preload...more or less?

If you use a buncha pre-load, a lobe can wear a looong way before some noise makes you aware .
A small amount of pre-load makes you aware very quickly of a bent pushrod, any loose fastener/adjuster, rocker/lifter failure, or any lobe/shaft/parts wear in a timely manner to avoid a buncha contamination thru-out the engine.
Experience .