Ok.. Latest update, drove 70 miles today, car was fine until I hit traffic in the city, groan started to get louder and louder and when parking the car I wasn't sure I'd make it home the noise was that bad, there was a shudder in the steering too, checked under the bonnet and no fluid leaking through top of the reservoir even though it was the same noise as original problem. Started the car 3 hours later and back to only a slight groan, drove 70 miles back home, mostly motorway and no traffic, groan only there when car idlying at low revs.. Anyway, seems like new pump hasn't fixed the issue much, it seems to have just stopped the fluid pumping through top of reservoir. Anyway, Fitting new reservoir next week and hope that'll fix it, I thought 09 models had correct reservoir..? What are the symptoms of a broken rack.? No oil leaking from mine at all so presume its fine...?