Try adjusting the pool cleaners weights. A properly balanced hose will make the cleaner sit at a 45 degree angle when attached to the pool floor. If the cleaner is rising off the pool floor from the front of the cleaner first, move the weights closer to the cleaner. If the back is rising first, move the weights further back. You might also need to add a hose weight (part #W83247). The only other thing that you can check is your water flow. If you do not have adequate water flow, the cleaner will not perform properly.