I rarely venture here but having owned an early version T67B (and refrained from spinning it) can I add something?
My understanding is that there could be a problem with the rudder pedals being interfered with by other parts of the a/c. I'm sure I've read a report some where.
It must be worth a Google or a check on the UK AAIB website.
So many incidents in aviation are not new but also not widely known.
Sir George Cayley