I'm new to cassettes (still in the cluster era - but learning). I recently bought a 13-26 Campy cassette to replace my 13-23 cassette. I put it together with no regard to the arrows which now I believe I was supposed to line up as I placed each chain ring on the cassette. I rode off oblivious and did not have noticible problems. Later when I was cleaning the old cassette, I noticed what seemed to be "line up" indicators. I took my new cassette apart and lined things up. Sorry for the long introduction to my question which is rather simple. Would it have made any difference if I had left the chainrings on as they were -totally random? Why or why not? Thanks for any thoughts.