My gauge set is only so accurate so take 0% with a grain of salt. Also recall this was a hot test. Bottom line is they were consistent and looked "very low leakage". I did not do the valve job, I took the head to Precision Auto in Simsbury CT. It was not a fancy valve job.Im impressed that the other three are so tight! Great job on that -- even on a high perf motor getting <3 % leakdown is darn good! How much time did you spend lapping the valves?