Guys, Please can anyone advise if Tiagra STI4700 is compatible with Tiagra FD4600? I'm using a folding bike and planning to upgrade to 56/44T chainring but the FD4700 only supports 52T and then i found out that FD4600 supports up to 56T but I'm not sure if its going to work if I use Tiagra 4700...