Hehe after all the answers everyone did come to the same answer as I originally said, which was an answer of yes we have control over our headspeed as long as we deviate from the original guides that are printed everywhere.
The whole reason for this post was for nothing more than my own personal amusement what I was actually hoping for was a post from someone who had used the guides that are given as examples everywhere and actually are running the headspeed that the guides had suggested would result from the given settings.
as an example the raptor 30 manual shows a guide that gives a normal headspeed of around 1550 (if i remember correctly ) for normal mode and 1800 for idle up, which is what i used as a starting point when i first built the heli, the settings were then altered over time until I achieved the speed that I was advised to run by a good pilot. In the end I spent some time playing with the idle up2 setting just to see what speeds were actually achieves using the settings in the manual and found them to not even be close to what the manual said they would be.

In reality the whole experiment i did including this post only shows just how valuable it is to have a good pilot to help when a novice is learning how to setup a heli, my own experience did show me that learning to fly the heli ( which is a achievement in itself) is not as hard as getting the heli set up correctly in the first place. A well set up heli is easier to fly yet if the pilot can't fly it they can't set it up.

thx all for the spending the time to make comments