According to Zinn, and for a mtb derailleur (lets' assume it's the same) he says that MOST front ds have the low limit screw closer to the frame. Sometimes they are labeled L and H too.So I know I just need to allow the cage to move slightly farther out from the bike frame when its in the big chainring. (I am using a 3 chainring Shimano 105 on a new Bianchi road bike). From the Park Tool website and the SheldonBrown website I know I need to tighten my H screw like 1/8th of a turn. Tiny. However, the screws aren't marked L and H and I'm way way too scared to test it like the site suggests... And google isn't finding me a handy diagram...
Option B is to take some warm fresh baked cookies down to the LBS with your bike and ask nicely "would you guys please show me how to do this?". Works great for me.



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