Two questions, please:
1. Did you removed the insert from the carb after you finished the brake in?
2. I'm confused about the plug you need. I know they say you have to use a turbo plug, however there are guys out there who says this is wrong and you should use a regular plug. I just completed the first 8 tanks with a regular plug and it's running just fine. I've never had an engine with a turbo plug so I don't know if you can realize what you need just looking at the head's thread. I suppose they are different since the turbo plug does not use a gasket.