I have one and do not use it very often, but it does work when I use it. If you have done everything that the manual tells you to and it still doesn't work correctly, take it back to the dealer and have them show you how to use it and stay until you do know now. That is what we have good dealers for and why I bought my machine through a dealer so that I could get the lessons and when I have problems they are there and willing to help me.