First things first, you should be running the NGK CM12 plug.
After that if its not running better come back and report on what's going on.
I have run 4 of these 35's on various planes with no issues so I might be able to help. I've done the diaphragm mod on two engines for a P-38 too. No pill bottle just thru to cooler air on the other side of the firewall.