I thought I would add, I found no successful way to test the lifters on the bench during the bleed process. Ones I thought were bad, were no different than brand new ones, which had the same variations in plunger stiffness/movement. Some are tight feeling, others bleed with ease. But all of them seems to be fine, so now I have about 12 spare ones. All springs had the same free height within a few thousandths, so they were all within spec and good to go.