This is my first experience setting up and using indexed front shifting on a road bike - the bike is equipped with SRAM Rival brifters and derailleurs, and an FSA Gossamer Cross (34-44) crank and chainrings.
The front derailleur is aligned according to the manual, and the limit screws are set correctly.
The problem is that when the chain is in the lower geared half of the rear sprocket, it is difficult to shift to the large chainring (this is a double). When in the higher geared half of the rear sprocket, shifting up to the large ring is generally fine. Shifting back down to the small chainring is fine.
I can shorten the front derailleur cable with the inline adjuster, but this seems to set the alignment such that in the large chainring position, the front derailleur is pressed worryingly hard against the limit screw and the 'trim' click doesn't actually move the front derailleur, just reduces the excessive tension in the cable.
I could take the limit screw out a bit, but this takes it beyond what is specified in the manual, and also allows the chain to fall off the outside in some circumstances...
My question is whether this is expected behavior (only being able to shift up on the front reliably when in the higher geared half of the rear sprocket). Obviously using the larger rear cogs with the larger chainring is not ideal (cross chaining), but on a double (my past experience is with triples and friction front shifting) should one not be able to shift up or down on the front regardless of rear derailleur position?