reconditioning

Hi, Can anyone recommend a good turbo specialist who'll recondition an OM642 turbo? I have a W211 E320 CDI, the engine had gone into limp mode and was reporting a fault with the inlet shutoff motor. Before the fault it used to smoked heavily, after a long idle, and I noticed the end of one of...

Does anyone know of a good wheel reconditioned in the Colchester area? My wheels on my c250 (2012) are badly pitted. Is this a common problem with these wheels?

At last service this summer it was suggested that the radiator on my 1984 SL500 could do with reconditioning - nothing serious but something to keep an eye on. Any advice on who could do this please? Thanks!

Whats involved and is it as good as new?

Just curious, I beleive all the troubles I have (about the boot light on )to be the vaccum pump in trouble, I open it today and it was really green oxydised. Now, I cannot affort £100 on a second hand one, can they be reconditioned? It might be just a wee bit of electronic? I put this on general...