I wasn't twisting that hard but I felt it strip on the last bolt on the cpu. Was an ek water block, any advise on repair? Was thinking an elongated c claim but I've never seen one. I didn't finish the job so I'm going to plug it in tonight and see if it flows but I have a feeling with that 4th bolt not tight it's probably going to be no improvement over air. I wonder if they'd warranty something like that, like I said, wasn't excessive pressure, just seemingly very soft copper.