http://www.mototuneusa.com/break_in_secrets.htm

check out this break in article and do it this way, then change the oil, But if you have already been riding the break in is done anyway. Changing the oil gets out the small metal dust in the oil produced from break in. So the longer you let it stay in there the more chance it has to wear on other parts. I change mine after a 50 mile break in and then after 1000 and then after another 1000. Oil is cheap another engine is not. Then I do the regular 3000-3500.