Is there any reason not to cut my aluminum seat post? On a 17cm post (not counting the end where it gets smaller and has the seat camp part) I could probably cut off 5cm and still have enough post in the seat tube. I judge this based on the length of post below the "max height" line and how much extra post I have in the seat tube. As long as I take my time to round off the edge and finish it nicely, is there any reason I shouldn't do this? I figure I may as well since it's not doing anything and, while not much, I may as well save the weight.