Just going back to the original question as below. it is a nonsense of contradiction
could the MP limitation be theoretically raised for operations at lower alts, lower disc loadings etc etc...
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Raise the MAP at a low disc loading and only one thing will happen, the blades will be spinning so fast that they will disappear faster than any boomerang.
the checklist in front of me here is 23.2" continuous and 24.1" maximum at sea level if it is 40C outside
That suits the 0-360-J2A, a la beta 11, however the rest are different with the 0-320 donk in the HP and Alpha it's just a tad more and quite a bit more in the Standard and Beta.
The easy answer is, once again, refer to the book, or at least the placard on your forehead.
You know Frank puts the placard pretty much right on your forehead, obviously its not close enough for the dumbos. duh.