This is teh problem with humans...
They almost exclusively ONLY remember PROBLEMS they heard of, somewhere, once, that someones dog had. Never remember reading any good things!!
So we have so far, what? ONE example of failure on this forum of 21000 people? Fooking one solitary example and people are instantly worried and negative about the product!!
I have sold, probably, thousands, and ive fitted a bloody fair few, and never had a failure that was attributed, definately, to the gasket itself. My own car has one fitted, the last one lasted some 15K miles before starting to weep, and thats pretty much normal for any YB gasket retained with std head bolts.
Some of you need to start listening to some professionals for a change instead of taking internet gossip as gospel. Start weighing up some odds. 1 genuine Failure, many happy people, work it out for yourselves. WRC is is of course better, but then its over THREE times the price... of course its fooking better. ROFLOL
P.S:
They stopped using bore shims a long time ago, so the complaint Karl had with Tiff's hasnt been of any great relevnce for a long time now.