Sigma 18-200mm f/3.5-6.3 DC OS replacing the aperture flat cable after disassembly

[@mfight]

I have a Sigma 28-105mm with a Nikon mount. The mount has 2 of the 3 tabs broken. The lens still functions normally and I would like to replace the mount. Do you use a particular website for parts?

[@CamerasLensesEtc]

I use mostly ebay and sometimes aliexpress. (Generally, it is very hard to find rear lens mount.)