Did they fit you a sprung clutch plate instead of a solid one? there has to be some give in the clutch system. Previously the give was in the DMF now the spring needs to be in the clutch friction plate. If it has been fitted with one then there must be an issue with the fitting as the conversions should not feel any different. They should have changed the slave cylinder as well. Not sure about the crankshaft pully/dampener as my focus does not have one. I changed my DMF on my ST170 myself for a solid fly and it drives and feels lovely