I'm also running airtech stuff, no problems here.
When I was looking at cozmeister's car last weekend, I did notice that his top hose had a bend in it, and that put it a lot closer to the pulley, he had very little clearance as well.
The bend I am talking about is about halfway along, it swoops downwards, I fitted a new genuine ford top hose a few years back, and it is different in that it is totally straight between the actual end bits, that turn towards rad and stat.
Maybe ford changed the shape due to this, as there is shed loads of clearance on mine.
tabetha