Once you set idle speed and mixture one time you will find it very easy. You can adjust w/ vacuum gauge and tachometer or just adjust by ear. It's a teach a man to fish kinda thing
To make tinkering low risk put a paint/sharpie mark at 12:00 position and keep track of changes. I'd mark 12:00 and turn CW till hit seat; write the results. Then you can get back to original clocking if desired.