On the Tarmac I am running a 100mm -6° degree. The Cipollini has now arrived and I have a 110mm -17° degree stem to play with, unfortunately it looks awful flipped to 17°. I really don't want to run it like that. I understand that is the best way to get it to near enough the same position as the tarmac. Not really sure what to try in terms of length and degree to get a suitable riding position. Would it just be a case of trying a variety and see what feels ok, or is there a more logical way of doing it.