Defective Idler Arms

Same thing happened to me. The first Moog idler had the center pin in the wrong location compared to the original. Rockauto replaced it. The second Moog had the pin in the correct place but it was locked up. I put it in the vise and worked it back and forth a couple hundred times. It did free up to where I could move it through it's range of motion but it got really hot to the touch after doing so. I installed it but it was always in the back of my mind.(The car is a project and has never been on the road.) I was tired of it taking up valuable thinking capacity in my brain so recently I replaced it with an AC Delco.(also from Rock) It was smooth operating right out of the box.