I’ve upgraded my K1C with the CFS-kit. I start a new print and the filament is loaded correctly and the print starts also as plannded, The buffer-box triggers the cfs to advance more filament. That works a few time and then the buffering stops and the cfs does not feed more filament. It seems to me, that the buffer does not trigger the cfs to advance filament, or the cfs does not react to the trigger-impulse from the buffer box. Has anyone seen such a behaviour before?