Originally Posted by Greenfieldja

the kit includes a loop that one needs to measure against their particular frame configuration. If you have a really small frame or a housing stop particularly close to the end of the chainstay you may need to trim this piece. My suggestion is to not trim this piece too short. When I wrapped up my racing career 8 speed systems had just made their debut...it wasn't until a bunch of years later in 2000 that I migrated from 7 speed to 8speed. After building a bike up for my wife with ultegra and dura-ace she gave me the nod to build myself a new bike with whatever parts I wanted. I started collecting 10 speed record parts in prep for that build. What I found was the length of loop that would have been adequate when building a 7 or 8 speed system did not serve well on the more friction finicky 10 speed system and after some research and trial and error found that this loop of housing should be a bit longer than on lower number of cog systems.

YMMV
-j