For those of you who use tippet rings to connect your tippet to your leader, does the tippet need to be very close in diameter to the leader or can it be a few "X's" apart? I mean, if you are using a 7X tippet does the leader need to be a 6X or at most a 5X to achieve a good presentation.....or can you go up to a 3X or 4X leader and still have it perform OK?