Does anyone know if the medium cage Shimano 8000 series Di2 rear derailleur can handle an 11-40 cassette? We currently have a 2016 Co-Motion Carrerra with Di2. At the time we bought it we had to get a 52-39 on the front and a K-Edge with 11-40 on the back. We'd like to change to the current Shimano 8000-series setup with 50-34 on the front if it can handle the 11-40 in the rear.