Timing Marks

This is a good thread so I wanted to resurrect it. I have a new 1964 Dodge technical service manual. And, I wanted to double check the idle settings which are posted in section 14-5 through 14-6. It lists initial idle mixture screw at 1 turn out. And indicates a curb idle speed of 550 RPM with headlights on and air conditioning on if equipped. Also, fast idle speed listing is 700 RPM with a hot engine and screw on lowest step of cam. Are these settings too conservative? These settings apply to the automatic and manual transmissions.