Hi,
I had to get a new one recently.
My husband was trying to be helpful when he messed the old one up. He did it taking it apart at the front to clean it, he swears he used the manual. re: the taking stuff apart, WHY?? do men never get rid of the habits they had as small boys!! It now makes a graining noise & chews up the thread. The new one however works like a dream. He is banned from going near this one!!