Jinda,
I am reliably informed that that was the case and the reason why the Navy jets were never considered for retrofit BDTs (809 was still shoving the throttles forward whilst I was flying the first BDT aircraft in Germany in 72)
with Grouse (and it must be the new Black variety).
Now listen, I know where the malt's coming from on the 4th and it ain't out of my wallet not at that bloody price!
Foldie