One of the zerk fittings on my bearing buddies won't take grease anymore.  What's the best way to clean out the fitting (or is there a way to do this?)  Or should I just buy a new zerk fitting?  

just get a new fitting   there cheap    and  you can replace both of them and not have to worry about future problems    as you would with a bad zerk

Thanks, cajun.  Tight lines.