I just went from triple to a double, and now chain rubs against derailure when front is on 53 back is on 12-15, and when front is on 39 back is on 25. I have Tiagra 9 speed dereilure. Are there any good articles for noobs on how to adjust front derailure. I feel like it's something that I should be able to do. I really don't want to bring my bike back to LBS, it's such a hastle. Heh, I guess I should have checked it before leaving LBS, but I was in a hurry.