I had issues with a new Delica 4, and sent it in for repairs to Spyderco. The blade would not lock, and I could of cut my fingers.They said it was lint build up. I don't buy it for a moment. I carried it in my pocket for a few months,took it out, and operated it.All was good. I go to use it and it didn't lock. Is this what to expect from these knives. Also, after paying the shipping costs to send it to them, I have to pay return shipping. This knife is becoming costly. I asked, "what if this happens again?" All I got was silence. I had such high hopes for this knife, and it has been dashed.I have lost trust in the knife and the company.