Couple of questions... Is this a triple setup? Are the levers and FD 'triple' specific? Are the levers, FD and crankset all matching 105?
Unrelated, but might be related later for you- I had a DA triple FD, attempting to use it on a Sugino AT and Command Shifter= the FD didn't work worth a lick. I ended up having to get a double FD and it magically worked. The triple FD was really only made for working within it's own system... just like... Shimano stuff.
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