Servicing the car and noted very slight movement in the L/H front lower ball joint. Can't be seen but can be felt by using a bar a raising the wheel while a finger is under the bolt. Accompanied by a slight click (not as bad as a clonk!). Car is a Wide track 99 1.8 K series. What needs to be changed. Is it just a joint or the whole L/H lower wishbone or upright as well? Slight vertical movement only, no lateral. R/H side has no play at all.