Zero qualifications and no knowledge, Greg. Just wild speculation that the original design and ICA were based on assumptions about the typical mission profile in which the aircraft would be engaged, and more wild speculation that the ADF actually engaged the aircraft in missions that involved much, much more TIS in turbulence and higher G manoeuvring (as a consequence of more low level operations) than was assumed in the design and ICA.
But as I say: just wild speculation.