im not familiar with the cartrige system so if its a stupid question dont bite my neck.
from what i read generally the cartrige system requires no give machines because it has the spring inside the tip,and from posts i saw on troubleshooting people said that because there is give on coil machines it is not recommended for cartriges.or when a spring is removed from a rotary machine to make it work with cartriges because they have their own spring or rubber band.someone throw some light here because im confused.