>>1216570This one broke in much faster than my other pro. It has 2,170 km on it in a month and a half of riding, I think the rank humidity this summer has helped it on its way. My old pro was new old stock that had probably been drying out on a shelf for 30 years and took about 7,000 km to soften up and still hasn't needed lacing or much tensioning with over 10,000 km of riding.
The stretching was resulting not in the saddle sagging, but the sides starting to bow out under weight. I've found in the case of bowing, lacing is a better option than simply adjusting the tension bolt. The last time I laced a B17 it started to bow again half way between the bottom and top, so I need to lace it again higher up. This time I just put the holes in a higher spot. I don't think I'd buy another B17, the leather is just too thin these days.
