I mean kicking easy, like starting on primer kick. That kick back is from timming  or few other things.   All those dips should come out when you have have squish set. Dont grind or shave on the head. If worse comes you might have to get a different head. Yes Iceracer is excellent choice to do the work to your topend. My cylinder and head is setup by Iceracer. Its runs really well and im really happy with it.