Beags,
I was a Groundcrew member of UEF at Abingdon, and wonder if the introduction of the "Green Spot" injector might have had an effect on flight settings for performance. As an Airframe fitter, I had no direct involvement or great understanding of the MOD, but, I understood it was done to deal with the tendency to cut the engine under certain loading (a spin ?). Perhaps the introduction of the "Green Spot" made other differences. I know that in my time (77-79) pilots always asked if their aircraft had the MOD. I'm sure operators could probably put this to bed quickly.
Smudge
