Tombola,
The point of my question was why the difference which Tinstaafl has put forward a reasonable answer.
My point about the needles is if you let them wander too far you will lose then and lose the Loc/GS. How do you know where you are on it if they are pegged? You dont so there is the answe to your question.
I dont disagree with having a diff test standards I was asking why.
And before you ask yes I can fly one
