I use my Bush Hog MLR 84" rake on my gravel driveway every spring. When I have the rake angled and pitched to create a crown, I get spill out of gravel off the leading edge of the rake. This causes gravel to spill into the grass. I believe I have seen a metal plate that is attached to the first tine to help eliminate this. However, I have not been successful finding a thread describing it or name for it. Any help would be appreciated. Thanks