...if the creaking is what you want to address, as stated above, it usually has a source that comes from someplace in your
assembly where two things meet and are sliding back and forth a little bit, so basically a lot of possibilities.

You start a methodical process of elimination by putting something lubricious along the rails, (teflon tape sometimes works),
and then tighten all the bolts and connections. there's also a source for squeaks up at the nose, so you work in some wax
or proofide up there, where the leather meets other parts. Most times the squeaks can be eliminated.

But I agree with those here who think that Brooks saddles are a marketing phenomenon. The ones I ride are old, and have
collected on various bicycles in ways mysterious, like gifts from some anonymous cargo cult god.