Hi folks!, I need a little assistance. I just completed a minor head overhaul on my 89 2.3 - new valve stem seals, new springs, cam change. I'm trying to get the rocker arms back in, and here is where I have a problem. The valve keepers will not lock into the collar on top of the valve spring. I try to compress the spring slightly to put the rockers back in, and only the collar and spring move - not the valve stem. So, rockers will not go in. Do any of you have suggestions on how to get the keepers to lock into the collar again?? Thanks!