i think I may have found the problem.
Is their a way I can post a photo of the plate that I think has failed.
I think it should have a piece of metal to stop the gear selector going to far, so what I think may have been the problem all along was, as I am changing gears I am pushing it through the gate, because the stoper was not their, I mean it broke, if I could post the photo, and some one can confirm my thoughts I would very much appreated..
I can always email the photos, if I can't post them.
Loughie