MJ:

Yours: You reply, '201.135 confirms the intended base width of G3...in case some individual(s) decided to remove the lower granite casing.

Mine: Do you understand why G3 is 201.3 Rc wide at the base?
Do you also realize that if we were to enter G1 for the very first time “ever” we would have known the precise base measures of the three pyramids before hand and realized the length of the descending passage is identical to the base width of the third/small pyramid?
I’m surprised Petrie didn’t notice the identical measures.

Know the outside of these structures before tackling the inside...otherwise you will never understand what the Giza site represents.

Best.
Clive