Rather than go and spend £20 on a new strap to see if it would cure it, I invented a quick, cheap and effective solution. Even if it does look a bit pants.
I got hold of one of those fabric/foam mousemats that normally cost less than a quid from a supermarket, cut a 3" strip from it and cut two slots 1" from the top and bottom, big enough to slot the strap through, but far away from the edge of the strip so it doesn't tear.
Result: Slightly odd look, but no neckdive and costs peanuts. Enough left on the original mat for another too...
Edited by fatboyslimfast, 22 July 2011 - 12:18 PM.