I have a 1990 Trek 420 with the internal cable routing on the chain stay. Problem is it won't shift down to the smaller cogs. It will get there after a while and will shift OK without the wheel on it.

I can tell that the cable just isn't moving freely to let the RD go all the way out. I have to pull on it when the wheel is not on to make it go there. I put in a new cable and housing today and did not help.

Any ideas besides welding a cable guide on the chain stay? Thanks

I just found this thread, what do you think about the zip tie idea?http://www.bikeforums.net/showthread...tage-chainstay