Hi Tweeters,After 24 years of nearly daily use around the world, my Zeiss bins had gotten out of alignment after a fall, the diopter knob was broken, and the strap rings were getting thin. I sent them to the Zeiss service center in Kentucky. In about a month, they came back as good as new. The bill was $264. I'm thrilled!If you have older, high-quality bins that need repair, consider sending them to the manufacture for refurbishment.Cheers,Paula CrockettLake Joy, Carnation, WA