I have an Argon18 Nitrogen which has internal cable routing. After 4 yrs, the gear-changes are not as snappy as they were despite adjustment, lube etc so I think its time for new cables for the Ultegra groupset. I've done external cables before, but not internal.
1. Do I need to get new 'outers' as well? The current ones are Jagwire which were fitted OE and I have slight doubts on the quality although they worked fine til recently... could I use Shimano ones? If I do, can I re-use the in-line barrel adjusters?
2. Is fitting simply a case of using the existing cables to thread the new outers over, then fit new cables through the new outers?
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