Hello, this is my first post, and I come in desperation.

Apologies if this has already been covered - first let me give a little background. I have a 2004 Fuji Professional with DA7800. I love the bike, and have had many happy miles, but recently decided to upgrade the frame.

Well, one thing led to another, and I made a few impromptu decisions using the credit card. Now I have a new frame, wheels and DA9000 groupset. Ah well, you only live once.

The frame and groupset arrived a few days ago, and I can already see where I'm going to have some challenges during the build. The frame, a fondriest TF3 1.2 has internal cabling, and the manufacturer has thoughtfully inserted cable sheaths to help with the routing. I've attached a picture for reference.

The manual that came with the frame is roughly worded, to say the least. If I understand correctly, I need to take the bare cables and route them through these sheaths in order to attach the cables to the derailleurs. My question is, do I leave the internal sheaths on the cables, or do I remove them after I've routed the cables (in other words, should the cables be uncovered internally, or should they be covered by the sheaths)?

Any help/advice would be very much appreciated.

Thanks!