I have an old Brooks B15 Champion narrow fitted on my daily commuter. I bought it approx 6 weeks ago

I only paid £10 for it from a LBS and it was in a sorry state. I have given 2 really good coats of Proofhide (top and bottom) and use the Giles Berthout Proofhide ....

It has come back to life and is comfortable. It has holes on the side, but no lacing. The leather is thick (this is the old 'proper' Brooks saddle), and no squeeking anywhere

so, proofhide works (I have been very generous with my applications) ...