I bought my X-52 used, have owned it for 2 years, and have not once ever had any kind of problems.  I incorporated a set of CH pedals as well..  
For lube, I have an old bottle of dish soap..  The hardened soap on top works fantastic and gets rid of any squeaks or anything..  Love this stick and will 
be sad when/if it breaks..  
I'm fond of the CH pedals as well..  If their sticks are half as good as their pedals, that's probably what I'll be getting next..