Was a bit concerned about the product based on previous reviews. In fact, the reviews were correct. The blow bar causes an error. The problem is that the plastic in the rotating part of the rod sticks to the stationary plastic and the rod stops rotating. There is a bug that there is an object under the shark. You can fix this by spraying tiny bits of silicone on the rotating part of the rod. There is a 1/8 inch gap. Once you've added the spray, the latch will rotate very easily. Since then I've run Shark many times with no errors.
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