Rampage":340s7tex said:I have a pair of these.
There should be allen holes in each end of the axle, if you think there isn't then consider that the flats may be full of dirt making the hole look round.
Try undoing the 6 pin bearing tensioner first.
Unfortunately the freehub isn't serviceable (Mavics advice) it's normally completely replaced, I don't think you'll find one though.
Mine was degreased by a Mavic dealer and seems pretty good now.