30 years on my Pro is a saddle , it gives a bit with each leg motion ..
warmed it in the oven to hot summer day , temperatures 100f

it, upside down, sponged up a wad of proofide,
the waxes re solidified in the leather when it cooled,
and It's been decent ever since..

even smoothed out some scratches in the surface after a while..

just by riding it..