Well, for what it's worth, I'm just back from Hyde Park with a Zeiss West 8x30B porro that came back to me this morning after having arrived at ECBR for service 19 September. Gary H has taken some time to turn around some of my other binoculars, but out of production binoculars with limited parts availability (or none in the case of things like my 12x50B) need to be handled with care. If the front lenses of your binocular are scratched up and need replacement, it's really up to Zeiss to get replacements (if available, which they may not be depending on which version of 10x40 you have...) over to ECBR.
Good luck with your repair and, again, for what it's worth, my own 7x42 came back perfect - the bridge (that had developed a slight wobble) rock solid and the optics, that I had thought were good before, were startling. The only quibble I could think of was that the old and well worn rubber armouring was replaced by a brand new set which somewhat lacks the feel and character of the old. But I'm sure Gary thought he was doing me a favour by making my binoculars look like, as well as function as, new!