Kevin, I just finished setup my 3770K, running push pull H50 as intake. Paste with IC7 carat diamond.
I found out that the core temperature offset a lot wor,

Core 0: 32c
Core 1: 39c
Core 2: 33c
Core 3: 32c

So far Core 0 , 2 and 3 got similar temperature while Core 1 is much higher, resitted the cooler and reapply thermalpaste, it makes no different, is it like that?

Ya, sometime when u sit the IHS back to the socket, the uneven pressure might cause this problem. Make sure u put the IHS evenly.