Poltern VA / steering gear defective ? Instructions ?

So dear community. After a little longer time I also have something again. My Laggi started to poltern on the VA. nobody found anything, Renault on the phone still naughty -> Is an old Laguna the poltern all. Great answer I thought to myself. Since indeed cross handlebars, track rods and everything else had no maintenance stump and had changed and nobody found anything more I decided to drive to the ATU branch once. They have some nice 3.99€ chassis check. Result -> Steering gearbox broken. W The mechanic had found something. I was astonished.. that’s exactly how it sounds. He then ruled out axial joint together with the independent Tüv expert who was walking around there. Both looked at this. So now my question… is this happening more often? Can it really be the steering gear? How elaborate is the change and how exactly do I proceed. I have to observe something. n during replacement? Can you remove this without lowering carriers? So practically the 2 screws down, track rods off and wires off as well as the steering rod off and then take that out sideways? How long does the change take? Vehicle see signature.. Laggi 2 Grandtout 2,2 dci Achja at the cost … So far ATU has the cheapest steering gear for 257,60€ Does the price fit only for the part ?