It is not everyday that I use disposable tubes, but i noticed in particular when using the disposable liner tubes, they do not work as well to me and a steel tube? Why is that? I noticed that the tube seems to absorb more of the tension of the machine. Does that make sense? To me, it seems to get the result I want from the liner, I have to turn the machine up, but end up at a point in which it is running way too fast. Any suggestions?