Shifting problems w/new compact crankset

[Kalidurga]

We bought this little hook-looking thing which is supposed to catch the chain and bounce it back to where it belongs. It doesn't really work very good, and sometimes the chain gets stuck underneath it or behind it or whatever.

My bike came with a chain catcher (the little hook-looking thing), but it wasn't installed correctly in relation to the small ring. I complained about chain droppage and the LBS tech realized that the Dog Fang wasn't low enough or close enough to the ring to actually keep the chain in place. It needs to be right at the level of the chain on the small ring, and only a couple of milimeters from the chain. Try moving it so that you can just slip a penny or nickel in between the chain catcher and the chain on the ring.

My bike also came with a 48/34 and I've had major issues with shifting up to the big ring. The inside of my ring is all scraped up from the number of times the chain has rubbed against the ring as I've pushed the shifter and cussed at it to go. After having three different LBS tech's play with it, I finally had to give it a try myself. Once I realized how the limit screws work, it really was easy. You just need to make sure that you check any adjustments on both rings, which is a mistake one of the LBS guys made. He adjusted it to make shifting onto the big ring easier, but then the chain rubbed against the derailleur when on the small ring. On my ride that afternoon, I was forced to sit on the side of the trail and put to use what little I had read about derailleur adjustment. I've had no problems with it since (*fingers crossed*.