"Pitch rate would be useful to know." JT, I have emailed you a couple of references: SAE Paper 700222 Loading Conditions Measured During Aerobatics and an IAC Technical Safety Report from 1987 on the effect of abrupt elevator deflection. Both available online but not easy to find nor free.
"The flightlab link she's a not work too well .. perhaps you can check ?" Works fine for me - goes to a direct download of the pdf but try this link
http://www.flightlab.net/Flightlab.n...rse_Notes.html and its #8 on the list of documents.