That may be true, but if it was mine, i would replace all the lifters, and make SURE the preload was right on all lifters.
Then if cam don't make lifters rotate........Send the hole lot back to lunati!!!!
Sounds like they will take care of you...............But we will see............
You might as well get your new lifters from Lunati. That way, one company can't blame the other, for the port machined part.
"You keep the fight with ONE COMPANY!"
Maybe Fight isn't the right word..................Yet