Freelander TD4 2002 noisy steering rack on full lock whilst stationary

[tsam19]

Hello all I've just bought my 1st Freelander TD4,3 door commercial van,94k miles. Needs a bit of a tidy inside and a few other bits of cosmetic tidying doing to it. Did notice though whilst the engine is on, the car in neutral & stationary, if I turned the steering wheel left or right towards full lock there was a clattering/catching, as if something was rubbing against the rack as it rotated, the sound coming from under the bonnet. However on driving the car & doing the same test there was no noise? Anyone else experienced this?? If so what was the remedy, the last owner presumed it was a dry joint of some kind. Thanks