Hydr lifters, adjustable roller rocker arms, had some noise, tried to adjust preload did i mess up?

Well good ending to this story. Readjusted everything one more time, letting the lifters fully decompress before doing anything (loosened the adjusting nut, waited 10 min listening to music and then adjusted preload to 1/2 turns. This got rid of the "dragging/grinding" sound. So most likely they were too tight due to me not letting them decompress completely before taking the slack off.

Then only thing I had left was that occasional tick from 1 cylinder. Checked everything with automotive stethoscope. Found the culprit, and put extra half turn of preload there as well (still in comp cams spec).

Now it's quieter than it's ever been with me. I can hear some "sewing machine" like sound at idle and at 3000rpm while cruising, but it doesn't sound alarming. Thanks to everyone helping!