Just bought my first quality knife, as the title indicates, a rift. Been messing around with it some for the past few hours since receiving. I've been opening it by initiating the axis lock by pulling it back and flicking the knife open. Maybe every one in 10 times I do this(average), the axis lock will not pull back to let knife close without considerable force. I've read somewhere along my research that the axis lock sometimes takes a break in period but never read anything about this particular problem. Anyone have any experience with this happening to them?