I have a fleeting suspicion that this is a Hizooka/Gunnery related issue, rather than a FM related one.
People, even experienced vets, tend to get the impression that they "cannot shake the guy behind him", when the guy behind him lands pings and hits out to long distances. - despite the fact that the distance is growing between the two planes.
So, what could be happening is, that the distance is actually growing when you try and outdive a Hurricane... but the problem is, the Hurri pilot lobs and sprays Hizookas which may land a hit even upto +600 distances. When something falls apart, you get the feeling the Hurri2C is keeping up with you.