I'm going to be doing a makeover on my Paramount. It has the original 105SC group and I want to keep it as original as possible. I have a spare 10 speed cassette and my hub can fit it. If I were to buy a set of Dura Ace 10 speed DT shifters would this setup work? From what I understand the inside width of the different chains is the same, they're just narrower on the outside. I have read from people who said a 10 speed chain worked on their old chairings but I need to know if the RD will work.