I have a bike I'm building up where I'm using full length cable housing. There are no cable stops on the on the frame. The front derailleur housing will be going into a hole in the down tube and exiting the another hole right behind where the seat tube meets the bottom bracket shell. The question is, where do I stop the cable? Do I have to stop it just behind where the cable enters the front derailleur? The issue I see is that if I don't do this, if you put anymore slack on the housing (remember, you can slide the housing further into the down tube) the cable will suddenly go slack and you won't be able to shift into the big ring.