Soon a new release for the UM2+ will be created to add the Tough PLA material. In this topic I want to investigate the known problems that we can perhaps fix and add to this new release.   At GitHub there is for the UM2+ only 1 reported issue: - A problem with filament grinding after material change.   The UM2 repository at GitHub has a few more issues, I will look into those.   I'm surprised no other issues have been logged. For example, when testing the mater