Rod Clearance
I am using Carillo rods in my stage 1. You can do some grinding on the heads of the bolt (I removed metal from only the side of the bolt that had an issue with tight clearance and the grinding was on an angle) with out a problem. I would get all the gringing out of the way, then have the rotating assembly balanced.
Jeff Rand
Neil, I have not received my heads from Champion. We are now going on 5 months!!!! I have been working on plan B but I have had a lot of unexpected issues with my set up.