Help needed with finding primary documents for the Olifant MK2

I can’t find applicable source documents to find the primary features of the Olifant MK2.
Why am I asking this? The Olifant mk2 has a lot of historical inaccuracies, one of which I am working towards getting fixed being the hull floor having 200mm of armour for some reason.
I made a bug report on it, but without a source to clarify on whether or not the Olifant really did have an extra 175mm of armour bolted onto the bottom of the tank between the MK1 and the MK2, they won’t let it pass.

To be more clear, I am looking for any official source that either: Provides a value of the RHA thickness of the hull floor. Or any document that clarifies the changes made inbetween the MK1 and MK2 such as additional mine protection.