It seems Rapi from our forums stumbled onto somebody’s brickshelf folder containing what apears to be an official combiner for Mantax, Carapar, and Ehlek, please see the general BIONICLE® sectoin on our forums for the details (As I cannot add the link just yet due to computer issues).

Update: The Pit War Tortoise is featured on pages 32 and 33 of the January-February 2007 LEGO^® BrickMaster™ Magazine .