Originally Posted by margoC

Saddle postion should be adjusted for comfort and fit, not to eliminate squeak. Mine creaked for a long time then for some reason it just stopped, most of the time anyway.

I didn't understand the second part of your question, are you trying to tighten the saddle with the bold under the nose? I wouldn't mess with it if it's not too loose. There isn't much fore/aft adjustability with the brooks saddles, mine is all the way back and I had to get a different post.

If you are trying to move the saddle around in relation to the post then your questioin would pertain to the seatpost. What kind of seatpost do you have?