Originally Posted by Dewey Oxberger
There is always flex in the bottom bracket. It's made more noticable when you are are a big guy pushing big gears. How bad is the rubbing? Does it derail the chain or just click?
Have a look at this (look under "clicks"):
http://www.jimlangley.net/wrench/keepitquiet.html
and where is it rubbing? (which part of the fd)