Originally Posted by
MoAlpha
Mine is 2016, the first disc year and has 5mm shorter chainstays than yours. It was originally equipped with a special FSA crankset to get the chain line far enough outside to accommodate the 142 mm rear dropout width. For some reason, mine came to me (unridden) with a 6800 crankset, which was one reason I bought it. Anyway, with a little fiddling I've got it quiet and shifting well throughout the range. You should have no problems.
Yeah, I saw this mentioned when hand-wringing over it. I'm not too concerned, but I know that I'll have to fiddle a bit. Hopefully I wont have to shim the granny ring (the rings on the new Shimano cranksets are set a little wider apart and the FDs were made to accommodate that), but that's not the end of the world if it comes to that.