SOG admits they've had some issues with these in the past- like anything else, when you start to get complexities you get a corresponding increase in potential problems.
We were giving one away last year, but when it arrived at my place to get ready for the giveaway it was a bit surprising since this was a brand new tool (indirect) from SOG. It had been donated to the site by a member after it had returned from SOG's warranty claim. I have no idea why it had gone in to warranty, but it was claimed to be perfect by the member who donated it. And, this is a good member, so I have no doubt that it was perfect when it left his place. When it arrived here however it was a different story. As I took it out of the sheath both blades fired out Wolverine style! To this day the only thing keeping the blades in is the sheath- I know because I still have it.
As soon as I realized this was not something we could give away I called SOG to see if there was anything I could do to fix it, but they advised me there was no way for an individual to service it, and they graciously offered to send out a replacement for us to give away.
On the other hand, my father has been using one of these for a few years now, and knowing him it's not being reserved for clean or light tasks, and he hasn't had a problem with it yet.
Def