Squeaking and creaking Brooks
First check all the obvious suspects: loose clamp, squeaking springs (if you've got 'em), creaking frame joints under the cantle.
Then check the not-so-obvious nose end. All that hardware at the tensioning bolt can creak. And the real odd bit to check is the half-ball and socket joint (yes, there is one) at the very front of the saddle. The easiest way I've found to oil that joint is to squirt oil on it from the back half. That is the cause of probably 99.999% of the creaking of my B67.
Nose creaks can propagate through the frame and sound like they are absolutely positively no-doubt-about-it coming from the back of the frame. Don't forget to check the nose!
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