Oh oh oh! I had exactly the same thing happen in the exactly the same way with some brand new Jagwire derailleur housing, I mean exactly. I believe it just has to do with the way derailleur housing is built. The strands of wires inside are all running parallel to the cable, and if you put enough tension on the cable at a bend it will pull through those strands in order to straighten itself.
To prevent repeat episodes, I set my front derailleur shifter up so that it is physically restricted by the shifter pod at the exact point at which the front derailleur is hitting the limit screw for the big ring. So, when I'm in the big ring my bar-end shifter is pointing upward, and when I'm in the small ring my shifter is parallel to the ground. I don't think it looks quite as nice this way, but I got over it quick and never have to worry about busting the housing. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.