It was brought to my attention on another forum that there are some lifters that want only 1/8 turn. This is only the static adjustment anyway, just to get you in the ballpark to crank the motor and for the cam run-in. You are expected to do a hot lash after break-in and can set the preload anywhere you think is right. I have read lately that some fellows are using 1 1/2 turns after the slack is removed.