Had a friend just wipe 2 lobes on a brand new 468, spring seat pressure 100 lbs., comp cam and lifters. Used cam lube, ran the engine for 20 min. @ 2,000 rpm. Drove it less than 100 miles, DONE wiped.
The cam companies are blaming it on the new oils no ZINC but i think it goes a lot further than that. I think the cam companies are buying chinese lifters and maybe imported unfinished shafts and there's not a one of them that will stand behind their products when this happens.
JMO
Zip.