I'm about to perform my first cable and housing change on my bike to accompany a new set of shifters I found on eBay recently (chorus 9 speed, old stock but untouched to replace the worn out units that have been on my bike for 12 years). I've only ever had mechanics do this task, but now that I have a housing cutter and a spare set of ergopower cables I figure it's a waste of money not to do it myself. Anyway, I'm going to follow the guidelines in my Zinn maintenance book and Sheldon's website, but I can't find any info on how the cable housings go in to the barrel adjusters. Do I add a ferrule and have the adjuster twisted to its limit one direction or another before I insert the housing? Also, how does the housing lock into the shifter itself? Is there a notch to hold on to the ferrule? I haven't really explored "under the hood" of the shifters, is it best to perform the cable installation while I have the shifers off the bars, or should I put them on and in position before feeding the housings in? Sorry for the number of questions, just don't want to screw up and have to buy another $$$$ set of campy cables.