bit of play at the passenger side rear drop link so went to fix that today but found the main knock is coming from the driver side steering arm on the 4ws gearbox

there is up and down play at the inner joint

maybe there has been some damage from the exhaust hanging down on the shaft when its up on the lift....not sure but there a tell tale mark on the shaft.
has anyone else had to / been able to change the rack end without too much hassle.
lings still list the part as being available - guess its the whole arm that needs replaced...not sure

any input appreciated.
it is item 7 on the diagram on lings