Schnee Boots failing?

[Fallguy]

I have a pair of Schnee Guide Boots that I bought over 10 years ago. The original bottoms lasted over 8 years before needing to be replaced. I sent them back to Schnee to be refurbished. It's been less than 2 years and the top side of the rubber bottoms are cracking and leaking. Has anyone one else had this happen with their boots?
I've sent a email to Schnee's to see what kind of warranty work they will do to fix this problem.