[ QUOTE ] Dan, Part of testing something is to be able to control variables so that the tests can be repeated. My questions aren't meant as a 'drilling' at all. I don't doubt that the rings broke. If a test is setup that doesn't follow with the way that something is used then the test my be invalid. [/ QUOTE ] Tom it looks like you were wrong in your assumption that these guys don't have a clue as to how to break test gear. Instead of trying to discredit the break testers you ought to focus more on the broken rings. If you remember the earlier 'hammer' break test was largely discredited because several claimed it was not a valid test. Hopefully now the 'hammer' looks more like a smoking gun instead of an invalid test.