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With the tip of the valve stem coated with some ink and the adjustable pushrod fully collapsed, install the rocker without the posi-lock and unscrew the tip until you find the ideal alignment. Sometimes if you have the wrong adjustable pushrod, no amount of unscrewing will get the rocker in the right place, so an Internet search may get you in the ballpark. Or, if you have your stock pushrods you can measure those to see which adjustable one you will need. Keep in mind, head and block milling, aftermarket cylinder heads, and various length valves are all factors that affect pushrod length and in turn, overall valvetrain geometry so it’s important to get this right.