PfaFF Creative 7570 "wont sew fleece" Questions

...sew fleece and the fabric wont move. It appears that the teeth on the fabric mover is too low to grab the fabric try lengthening the stitches till it goes . that has helped me On most machines, you ...

...wont be able to afford to send it in anymore. My question is what is causing the timing to go out so easily on these machines? What can I do to prevent it from happening again? Any tips or help would ...

...Wont Thread I was sewing over a fleece seam (not even that thick) and the needle broke and bent, so I change the needle thinking it was just another breakage, but now when i turn the wheel manually ...