Its good to hear that they are happy to push Mercedes towards paying for the fix or at least a payment towards fixing the issue. I phoned my main dealer and they quoted me nearly £1400 to carry out the work! I didn’t know weather I could push for Mercedes to contribute towards the cost as I haven’t owned the car from new and it is out of warranty being a 2016. I’d really appreciate it if you could let me know how you get on, if you get them to commit then hopefully it will give me some leverage also! I did look for some after market steering knuckles to carry out the work myself but I can’t seem to find them anywhere other than a Mercedes main dealer who want over £900! The car is really heavy in tires and is begging to drive me nuts.
Just wanted to share a little update with you, I finally managed to push the dealer to convince Mercedes to contribute, Mercedes initially agree with a very little contrinution but then I contacted Mercedes customer support myself and further asked them to reconsider this case and they bumped up the contribution, though overall I still paid ~£1100, the original estimated cost was just over 1.8K.
The juddering effect is almost gone, I am still running on my mostly bald front tyres which I am gonna replace before end of the year. Overall I am very happy with the results, I can hardly produce the skipping effect and If it happens it is due to bad front tyres, once I replace the tyres I will further update this thread.