Hi too all, with regards to the diff problem that I had on my 90,
I have now found out the problem and it may be of help to anyone out there with the same prob,
The problem I had was that it was stuck in diff lock and no matter wat I did with the diff locklever it made no difference (pardon the pun) I then found out that it was lever on the diff box was worn and thus not allowing me to move the gear stick, The landrover mechenic slid underneath and move the lever on the box by hand to remove it out of diff lock,this problem is to be sorted on tuesday coming and I will let you all know as to the outcome thanks to all who replyed to my help request