The way I tighten my polylocks: Wiggle the pushrod up and down while turning down the nut (don't do the spin method) until it stops wiggling. Then turn the set screw until snug without turning the nut. Then turn the nut and set screw together 1/8-1/4 turn using a box end wrench and Allen wrench at the same time. That firmly locks the set screw and puts the proper compression of the lifter spring.