I sprayed number 2 and 7. After sprayed well (Half the can lol) take it for a short drive and after a while i promise you it will be silky smooth with zero squeal. At first just after spraying i turned the steering from side to side in my garage and thought it didnt work :argh: then went to the shop to get a few things and :rollsmile: good as new.
At 1st I also suspected the slip ring, as the noise sounded like it was coming from directly behind the steering wheel, changed the slip ring and the problem persisted.