Originally Posted by CBolt
neatsfoot oil will soften it right up and prevent any cracking. tighten the saddle before you soften it to avoid over tensioning.
Bad idea. Avoid neatsfoot as it will attract mould after a while. Better to use a leather conditioner which is made for the job e.g. Hydrophane or similar and don't use too much.
Forget tensioning unless the saddle is really sagging which I would doubt.