There could be an issue with your term snug. People have different interpretations of what snug means. What I do is turn the adjuster down so the pushrod still can be lifted up and down slightly (say 1/32"). At this point your index finger gently on the side of the pushrod and moved back and forth will easily turn the pushrod. Turn the adjuster down until that easy rotation stops. At this point there is zero lash but the hydraulic mechanizm is not being pushed down. Now the prescribed 1/4 to 3/4 turn on the adjuster can be made to position the lifter piston in the center of its travel.
If the snug interpretation is the pushrod can not be rotated using a finger and thumb, the lifter is probably collapsed to the bottom. Then the preload 1/4 to 3/4 turn is opening the valve.
Personally I prefer the 1/4 turn as it moves the piston down slightly allowing the lifter to function as designed, but not much for pumpup on high revs. If you do get to the pumpup state, power will go flat.
