I'm trying to route a board with an high frequency processor and I need all the nets to data and address buses to memory be the same lenght. I'm trying to configure nets classes creating a new class and assigning it to the neccesary nets. The problem is that the nets never has the length in the margin between min and max length I configured. Looking at info-->length violations I see my nets with a warning because the lenght is lower thant the min I configured. Can anyone help my to configure the nets?