I'm having a real tough time setting up the 6800 front derailleur, at the moment it is not shifting up from small to big at all and I have a lot of trouble eliminating slack in the gear cable on the small ring before screwing down the allen bolt that holds the cable. I'm trying this without an inline gear cable adjuster at the moment as I did not need one on my old 6700 set up, can anyone advise if that is the main issue? I was sceptical about how much difference a barrel adjuster would make.