Sorted the 2wd/4wd selection!! I think I've narrowed the strange feedback down to the railko bush under the swivel housing... anyone know of a good place to get shims? Or just replace it?

Thank you! On closer inspection, It seems to be always in 4wd... just going to check all the couplings from the yellow knob...

I've got lots of strange feedback through the steering wheel at low speed on full lock... there is a little play in the nearside front bearings... and the half shaft moves in and out... A LOT... here's a video... Does anyone know how to proceed? Any comments will be greatly appreciated...