Upload & Sell: On
When I saw your post, I thought "but, but... the Summicron-R 35 doesn't work with the Speed Booster." I was wrong. According to the Metabones site, it's the Super-Elmar-R 15mm, Elmarit R 28/2.8, Elmarit R 35/2.8, and Summicron R 50/2 lenses that require modification. Just my luck that the 28/2.8, 35/2.8, and 50/2 are three of the lenses I'd hoped to use with the Speed Booster. I don't want to fuss with any of my Leica R lenses so I've ordered a Contax C/Y Speed Booster instead.
Are you intending to modify the 35/2.8?
The Summicron has a fin that needs to be shaved in order to work with the SB, as does the Elmarit. I believe they're there to protect the rear elements when the lenses are getting mounted to R cameras
but they don't serve any function in the optical path, so, yes, I do plan to shave the Elmarit as well.