Just for the record, the B&L 8x50 Elite has always been a Bushnell product. It is a superb binocular, made in Japan, to very high standards, for Bushnell, then given the B&L label. B&L stopped making bins many many decades ago and Bushnell obtained license to use the name on its best binoculars and scopes (until about the year 2000). Thus, all of the beloved birding binoculars of the 1980s and 1990s with the B&L label, such as the B&L Elite, the 7x26/8x36/10x40 Custom models, and the 2nd tier Discoverer models were Bushnell products made by Japanese manufacturers. It is my understanding that Bushnell was sold a time or two in recent years, and the new company may not be as good about customer service as the original Bushnell, but I don't really know, so let's not start rumors!
As for Bushnell's customer service, I've only dealt with the USA (world corporate) headquarters and repair facility, and it's been some years since I've done even that. In the past, they always took good care of me. They repaired bins when possible (even very old models), and if parts were unavailable, offered me my pick of current models of equivalent quality. My most recent experiences (~3 years ago) involved problems with friends' low end bins, such as the Bushnell 8x42 Legend Ultra HD, which are made in China, and which they replaced rather than repaired.
In the case of your 8x50, since parts are not available, I think your only options are to request replacement with another model (if one would satisfy you--nothing is equivalent to what you have), or to send your bin to an independent repair person who might be able to send the lenses off for recoating (expensive!).
--AP