Some models have a little more air gap than others and it's giving a rattle noise. Our engineers are working on a good fix. Larger units use part # 784918 as a bumper on the anchor. It works for a short time on the Raptor but a more solid fix is coming for those few units that Rattle. The air gap does no damage to the unit just bugs the operator. I would suggest waiting a bit for the final fix and be done with it. It will just be a plug and play type piece.