Offset valve spring retainers or keepers ?

I'm curious have you gotten anywhere on this project? I have ran into the same situation and the same problem. I have the same springs with a .494 lift lunati voodoo cam. When I check my install height after my valve job I'm getting between 1.62 and 1.64 I was thinking I was gonna have to shim them after the valve job but I'm still shorter than the 1.65 install height where its supposed to be.