Dx3R/Pro wheel help

[Tomk26B4]

Hi Everyone,

I've got a Dx3R and the wheel keeps sticking when turning it to the left and not returning to the middle.
I've took the wheel apart and seen you can adjust the spring tension, I've turned it right up to the max and its ok for a couple goes then starts sticking again?
Any ideas?
Or should I try and buy a new wheel part? Does anywhere sell them?

Thanks
Tom