You seem to be confusing 2 different things here. UTG returned lifters he damaged on a cam break in, the 5.7 cam issues are factory cam failures that typically occur after some years and mileage.
Im not confusing anything. His claim is they they were manufactured without a crown, and as I recall, could be wrong, he shows machining marks on the bottom. How is that his fault?
You could be right, but you present ZERO evidence, so it's only your opinion.
