Heres what happened to mine. Yeah There is no chance of warranty. Bought them used and abused, then I wrapped them and ran them. Wasnt putting the money into ceramic coating, got my wrap for free from a friend.
I think Either way your screwed... As Concillian said the precipation hardening occurs then its crack city.
I may pull them off and redo them with SS321 this winter if I get bored and havent come up with another solution by then