I sent my 8.5x40ELs for a 'repair' as there was a ghosting (akin to a stain) in the left barrel on the inner glass and this seemed to affect the focusing in getting a sharp image, I just couldn't get a 100% focused image. They came back in 4 weeks and had a chip to the eye piece which was not there when they were sent in originally so was non to pleased.
Spoke with the Swarovski UK Team next day and sent them back. As they were needed back urgently they done everything they could to get a swift turn around and back immediately. Whilst obviously disappointed that they came back with damaged glass the immediate action and turn around to address the issue was outstanding and showed that there is a top quality service being provided. The bins now seem completely spot on and seem better than they were before, don't seem to have the same focus problem I suffered for two years. I even got provided new accessories to got with them, i.e. lanyard etc.