On my GF Cake 3 DLX, I changed from a Race Face Evolve crankset to a Shimano LX M580 with the outboard bottom bracket. Now neither my LBS nor I can get the front derailuer to dial in. At this point, I'm only able to use either the two large chainrings or the two small ones, but not all three. Has anyone faced this problem? I'm not a whiz at gear adjustments-- and, believe me, I've spent a lot of time on this-- but my local shop is stymied as well. With the new crank, I am using a spacer on the right crankarm, which allows the inner and center chain rings to be engaged. Without the spacer, I can access the center and outer rings. So, aside from stating the obvious, which is that I'm an idiot, what is the problem here? H.