SO HERE THE PROBLEM


I PUT THE NEW TOP END IN THE TRUCK THIS SUMMER.BLEW TWO PUSH RODS JUST RECENTLY TWO INNA WEEK FOUND A VLAVE STEM TOP ROUNDED A BIT FIGURED WELL JUST CAHNGE THE VALVE OUT DECIDED AGAINST THIS AND OPTED TO PUT NEW HEADS ON... START TAKING IT APART AND FIND A LIFTER SPRING RELEASED AND SITTING IN THE VALLEY..WHEN I PUT THE TOP END IN I BATHED THE LIFTER'S IN OIL FOR A MONTH AND A HALF AND MADE SURE THEY WERE ALL GOOD TO GO WHEN I PUT THEM IN.THE FIRST PUSH ROD THAT WENT I THOUGHT I OVER ADJUSTED IT PUT A NEW SET OF RODS IN AND THAN IT WENT YESTARDAY SO I FIGURED WHAT THE HELL I WAS GONNA CHANGE THE HEADS ANYWAY TO FIND THIS LIFTER ON THE SAME VALVE AND CYLINDER THAT BROKE TWO RODS, THE RETAINER SPRING IS SITTING IN THE VALLEY AND THE LIFTER IS FULL OF OIL AND THE VALVE STEM TOP IS ROUNDED OFF....

WHAT WOULD CAUSE THIS IS THE QUESTION THAT I HAVE I HAVE NEVER HAD A LIFTER FAIL BEFORE SO I AM REALLY AT A LOSS ON THIS ONE..