Send them in. Swift will fix them at no charge.
Repair and Service
For Binoculars over 15 years old, that are missing parts, please send your product to our repair department at:
Swift Optics Repair Center
C/O Nicolas Crista
25 Crescent Place
Hanson, MA 02341
781.294.2039
For Binoculars less than 15 years old and Spotting Scopes, please send your product to our repair department at:
Swift Optics Repair Center
LSSTNR
1927 Richmond Ave
Houston, TX 77098
713.529.3551
Check out their website for what to do.
Swift Returns
Steve