Wizard, it's excellent that you found the issue. When the time comes, measure for required pushrod length during the new set up install. There are tutorials in the internal section or if you have trouble finding one, I'll get you a link. Am relatively sure that the lifter failed due to improper pushrod length, too long. Once you have the new length measured, am sure that one of us (probably Bob) will have that length in a set, to give you. Just let us know.