I bought the Jegs bench vise style spring pressure tester. What I did was I bought a Comp Cams adapter that allows you to use a drill press as your spring tester the adapter goes in the chuck and presses flat against the actual spring tester. I found it to be very accurate and easy to use. However it did take about three or four of them to show up before one didn't leak LOL I guess patience is a virtue or Blind Faith
