Daruma's...how to use them properly?

I'm using Daruma's under my cdp and was wondering if I should use a lubricant in the cups to make the ball bearing travel more freely. Thanks in advance for the advice.
I don't have Darumas, but I would never consider slowing up the response of my Rollerballs or Aurios.
I have a set of the Darumas which I have used for several years with out any type lubrication or adjustments. I have thought about placing a carbon fiber or maple block on or under them to mellow the harshness out.
Thanks for the responses. TBG-What do you mean "I would never consider slowing up the response....". Why would a lubricant slow up the response of the Daruma's?