I'm sure there is no plate and there is no screws around the arrows. And I think that black button has only one vertical strip (without full separation of buttons).
Some dimensions are different from Hasbro's official "hero" blueprints.
I will be waitin for 4K Blu-ray to finish my drawings (as you can guess, I will make drawings to create the most accurate replica which fit electronics inside - maybe I'll make a small run of it). So we can discuss all of the dimentions later, when I finished, if someone want to.
Btw, the blade is around 700mm length here.
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