Zombie thread because history repeats. I bought a Brooks saddle and five years later the backplate cracked around where the left-side rail attaches. I sent it to the authorized Brooks repair shop in the USA (transportcyle.com in Philly) in early 2019 and had it repaired. All was well. Here we are at the dawn of 2024, so a bit less than 5 yrs, but not much, and yesterday my saddle started to creak. Upon investigation, I discovered the sMe crack in the same spot. Sigh, I guess I am too fat for Brooks pro saddles (I have weighed 200-225 over the last 10 years - mostly around 210 - depending on season and a degree of laziness).
I surrender. Modern saddle for me next.