Anyone know the answer? I found one post that someone said they believe the UD60 are still using the 2 pin system. I found another post saying the new 4 pin is stronger and locks faster staying engage in forward and reverse but nothing confirming what the UD60 uses?
I'm not 100% sure but I don't think what I have is the new 4 pin system. That being said, I have not seen it be a problem either. Of course, I'm just a mall crawler so there's that.