[Larry Hill]

Thanks Todd for the info. I am going use these and track how long it takes to see a happy ring and land relationship develop. If you remachined the top grove top and bottom their is a good chance that the top ring placement will be too close to the top and be outside of the rules. Not sure what NHRA will do with an out of specification ring thickness. It is possible to have a valve too big or too small ether way your out.