There's been lots of discussions on cross brand 11sp cassette compatibility. But I have a question regarding the compatibility of Campagnolo's 11sp shifter and front derailleurs. Specifically, I have 2013 Campy Record 11sp shifters with the same vintage front derailleur, but would like to upgrade to the latest Record S2 front derailleur with the extended arm that increases leverage at the derailleur and thus reduces force required at the lever for shifts. Do the older 2013 Campy shifters work with the latest 2015 "long arm" front derailleur? Or is the throw ratio and cable pull different enough that the two vintages will not be compatible? Anyone know or have experience swapping the two front derailleurs? Thanks in advance.