I could certainly be wrong about this, and I have never used Millennium mode before, but I thought that the ramping parameters only mattered if you were in true "Ramping" mode. I thought if modes like Millennium were chosen, that the proper ramp degree was built directly into the code of that particular mode and the only other factor that was adjustable is the cycle speed setting.
Would love to hear from others that may know better about this setting, but this is always what I had assumed.
Millennium - ramping mode legal in the Millennium league limited by the cycle speed setting.
straight from the manual. So it sounds like you need to adjust your cycle speed to the proper bps for the event/league. You can also adjust your ramp start as trucockerfan stated, I personally like to have mine on rather high so I am basically in semi until I need the ramp. I dont know if Millennium has a standard for ramp degree though. I am not too familiar with it since I play in semi but im sure the rules are in the rulebook as to what is legal.