So i just recently got my zt0560 back from kai, i sent it in due to a really sticky lockup to the point i had to pry the lock back out with a screw driver to get it to unlock. The warranty department at kai was awsome. I sent it in and in a couple weeks had it back with a fresh edge and a new lock side. The only quible i have with it is that the new side isnt machined out like the other one was, on the other hand it does have a new steel lock bar insert so i think its prolly for the best. Maybe with the new insert they couldnt machine it out and still retain the same strength? What do you guys think. Thanks for taking the time to let a new forum member know what you think.