Here is my dilemma. I'm doing my first DIY build and am currently working on the drivetrain. I am foolish, and put the chain on prior to setting the deraileur limits on both fron or rear. Now I'm paying the price and can't get it tuned correctly. I want to take the chain back off to set the limits properly so I can have a full range of gears. The chain is a Shimano Dura-Ace Narrow 10 speed with those funky extra pins they provide. Will I be ok breaking the chain again? Or, any suggestions to set the limiting screws witht he chain on?