I just raced my RC12L3 for the first time this past weekend. But, at the track I was setting my tweak from the front, and was told by several guys I should do it from the back of the car. Even, had one guy tell me it really doesn't matter, as long as I set it the same way everytime so I know how the car is going to react. So, I now set the tweak from the front, and then I check it in the back. Usually once I have the front set, the back is perfect. But, if I set it from the back the front is always a tad off.
My queston to ya'll experts

is, which way is correct or does it really matter??