Lifter Failure

considering the expense and misery caused, no, not good enough , and obviously not as good as or better than OEM... so can't be considered a performance part. and if the diameter is wrong can't be considered a standard or replacement part. Its just expensive scrap...
so worth checking the advertising BS of the manufacturer or supplier, and if possible arm yourself with the appropriate quotes from it to illustrate the point you intend to make....

measure-photo-proof-complain- illustrate the difference from what was advertised/promised

see where you get to.....
if you don't ask you don't get, and they will never know....
and if you get no where at least you tried

Dave