I got mine last Dec. and it has the C&H ignition with the white ring holding the pick up. I was told they changed over to one with A black ring and had some problems with it but C&H was changing them for people?? I don't think I'm having an ignition problem and the other ones I have seen like mine were all fine. I'm sure I'm having some sort of fuel/carb problem but I'm leaving no stone unturned at this point.
My only wish on this engine is that the needles were on the side instead of facing the front of the engine. A G-45 is so much easier to tune then this one. I know, I can turn the carb but then the linkage needs to be changed and they have one of the best linkage set ups I have seen on an engine.
I'll get it figured out but I just now have the time to play with it. I was just starting to move here when I finished this plane and never had the time to get it all set up before I left. I had other problems besides the engine but A new RX fixed all of that.