I'm writing an Alternate Universe fanfic where the Matoran in the Chronicler's Company become Toa via the stones the Toa Metru created. Initially I went with the vague description in one of the Adventures books of 'the Toa Metru hid the Toa stones all over the island' and began sketching out possibilities for where, but when I read on BS01 that Quest for the Toa involved Takua gathering up the Toa stones at the Turaga's request I made it my mission to play it so I could get more detailed canon information. When I did find a version of it by scouring the net and began playing it, I find that Onepu tells me that the Onu-Koro Toa stone has been stolen from Kini-Nui. Then Turaga Whenua tells me that the Toa stones are needed to tell 'the legends', and that they're named after their Koro's Toa. They are also carved into the shape of their respective Toa's mask. None of this data matches up with the reason the Toa Metru created and hid the Toa stones, which was so that new Toa could be created when the Toa Metru became Turaga if the island needed protectors, and back then none of them knew that the stones would be used to summon the Toa Mata instead of creating another team. My question is this: how canonical are the points of 'the Toa stones are shaped like the Toa Mata's masks', 'the Toa stones were gathered up at some point to be used as props in storytime', and 'the Toa stones were later stolen, either by Rahi under the control of the Makuta or TerryMak himself'? The first point is mentioned in passing on the BS01 Toa stone page, but the second isn't mentioned at all even on the QfoT page itself and the third, while mentioned in the game summary, is contradicted by the line "Using a Madu Cabolo, [Takua] blasts a hole into a small section of the caves, containing Onua's Toa Stone, hidden there long ago by Whenua."
So, basically... Bionicle canon is contradicting itself again. WHAT'S CANONICAL HEEEERE