Okay thank you for the informations.

I bought the Carson steering set... but it was crap so I put back the stock one but with the Tamiya 54550 Low Friction Screws. Fixed a little play.

Then I noticed play on every tire. Basically, there is play between the shafts and the rear and front uprights. So I bought aluminum front and rear upright, but it still didn't fixed the problem...

So I bought nylon shims to put between the outer shaft bearing and the small metal "stick" that holds the bearings in place... Breaks my tire so that the car won't drive anymore... Put a lot of grease and now it's okay.

3 more posts and I will be able to show you nice pics of my yellow Lancia and every piece that has slop or play.

Thanks a lot guys. One day I'll fix this with your help.