Hi All. I just picked up a new to me (actually used but only ridden a few times) Defy with the 105 group. I was doing some checking of the fine tuning of the FD tonight. As I was checking travel, adjusting the cable, ect and changing between cranks I heard a funny noise from the shifter. Almost like I had snapped the cable. At first I thought I had but it was OK. All is fine and the FD is tuned but something funny is happening with the shifter that I'm not sure should be. When I'm on the larger cog and want to shift to the smaller cog I press on the smaller shifter and I hear it click but not FD doesn't move. If I click the shifter again the FD moves and the chain grabs the smaller cog (almost like it's a shifter for s triple not a double but the FD doesn't really movd). Or if I'm on the large cog and press the smaller shifter all the way all at once it will change to the smaller cog. Is this as designed and my lack or memory of the test ride today plus inexperience with the group set have me all confused?