hdhorsepower

hey guys in the middle of a head and cam swap and the problem i am having is how do you adjust your rockers? i have a set of comp 1.75 adjustable rockers but on a ls1 motor you can't roll the pushrod with your fingers to feel when you get to zero lash like older engines so how are you guys doing it? the only way i thought of is to bring the cylinder up for adjustment run the nut down finger tight then maybe a little more with a wrench. anyone else have any ideas? thanks