Originally Posted by Julian
When you are this far down the ILS its that sensitive I doubt you would really notice the difference. If you are current and flying the ILS with small inputs you should be holding the needles without too much variance anyway, if they swinging wildly - suggest you get an instructor.
I don't believe DFC was suggesting they would be "swinging wildly", however basic trigonometry tells us that due to funnelling, being several feet out (in GS) at 500' DH (say range approx. 1.75 nm) is not going to be half-scale deflection, whereas it could easily be > 1/2 scale deflection (and therefore a fail) at 200' DH (say range approx. 3/4 nm).