right, i've set my XX1 derailleur up and it changes up the cassette (from small cogs to large cogs) lovely and smooth but only if i go one click at a time on the shifter.
if i'm on the middle of the cassette and want to push on to the biggest cog, so jumping 5 at once (the shifter will do 5 at once), then top jockey wheel of the derailleur fouls the cassette...
what's causing this?
i've adjusted the derailleur correctly and set the correct distances on the jockey wheel when on both the large and small cog as per the hand book.
could the chain be too short?