Also installed the checking springs and used the checking rod to determine my pushrod length using rumblefish's method (install checking rod and extend it until the lifter is depressed .050. I found that length to be 7.125. The stock rods I was running with the stock setup were 7.5. I put one in with clay on the piston just to see what would happen, and I don't think I got 1/4 turn before the valve bottomed out.