Cool, thanks for that.
I might be able to fold the tin/steel to get it to sit like that with the bottom the way it is.
Its a bit strange that the catcher is made like that.
But maybe not, i see the bottom semi circular bit thats to go over the 'axle' at the back of the diff. This is different to the non SP catcher.
Then the two tabs at the bottom of the sides that would sit on top of the axle. I suppose they help take the weight.