Oh the things I have done to my Innova! First I caught the lamp shade of a floor lamp with the back handle and when I stopped the machine, the lamp fell on the go button then pushed the machine across the quilt. When I was setting the height of the hopping foot, I stuck my nickel under the hopping foot then broke loose the screw that holds the hopping foot and hit the needle down button at the same time...divot from the needle in my nickel, shattered needle - put in a new needle and off I went. Chipped a chunk out of a ruler when the hopping foot came down on it (never did find that chunk of plastic). None of these "oops" ever knocked the timing out of whack. I even had a needle fall out when I was quilting - I didn't tighten it down properly - bent the needle but that was all. Guess my Innova is pretty "me-proof"!!