adjusting rocker arms/lifter help

[knightowl73]

ok, ive tried this 3x by the book and with you guys help, once running.

i loosened each one tick they started ticking, slowly turned them back n till they didnt, then went exactly a half turn more.

the truck runs a hell of alot better now, doesnt run hot with lil sprints down the street like it did, but it still clacks under hard accelaration. is there something i am missing or is there something else i need to be checkng. could this be a lifter's fualt? im stumped. this motor seems plenty strong, but sounds horrible when i wanna just drive it like i normally drive. ive been having to drive like normal people lately lol.

someone please help me out here.