I have one and it doesn't work.
I even have all of the new parts.
I've tried everything through their customer service department....I've got the adjusting screw adjusted just right, I've got normal oil in it.....but nothing.
It just won't lock up for me.
They sent me a new one this week.....so hopefully this one will work.
Right now, I couldn't be more disappointed. It definitely didn't help my fun factor for EJS. I felt like someone with an ARB, "Hey, is my front locker working?!"
On a positive note, everyone else that I've talked to that runs one really likes it and they have never really had any problems with them. So, who knows.