Further to the clunking issue I changed the oil in the axle to the recommended for a BTR axle as I have no idea what was in there or how long though it only has 40k on the clock .the amount I took out was 1.25 litres so down quite a bit then put 1.7 litres and no clunking ! I also checked the old oil to see if there was any debris in and not a bit so hopefully no damage done
