Magnum Roller Lifters

my heads were gone over by a reputable guy...there again not mentioning names. absolutely no binding whatsoever. everything was checked and gone over before they key was even turned the first time. Same rockers were in the engine for the 3 years ive had it now. Rockers I was sold from him were I believe procomp or PRW? (Chinese rebranded)
Completely understand, and no judgment here. Actually wondering if something has changed or moved since it was originally assembled. The picture you posted does not appear to show signs of binding until after the breakage occurred, so maybe just that rocker arm gave up after many cycles. Figured they were PRW and they are usually pretty reliable on this type of build.