Warning
Dealing with several hundred horsepower is dangerous. Whether you use our advice or not, making sure it’s done safely is your responsibility, not ours. The risks are mainly 3. First, if you drive stupidly, when testing or whenever, you can kill people including your self. Secondly, having your arms and hands in the engine room while the engine is running is dangerous. Think! Thirdly if you go wrong in your adjustments, too lean and/or too early ignition, you can kill your engine in 5 seconds.
To avoid all this happening is your own responsibility. Good luck!