Hi guys, first post. I have many Spydies but my favorite is my Dodo, when its working right. It's already been back to Spyderco once and I'm sending it back again tomorrow for the same problem. The shaft beneath the ball bearing that locks the blade keeps sticking and hanging up. It gets so bad sometimes that I can't pull it back to close the knife at all, just have to play with it. Also makes it extremely rough to open. The severity of the problem varies from one use to the next. The knife has seen VERY casual use and has not been worked hard nor abused. I'd like to think its isolated but, anyone else have this problem?