I went to my local dealer today and was told I probably wouldn't find a slip clutch for my 48" brush hog. My tractor is a B6200 @ 15HP/12.5 PTO HP. I bought a few grade 2 shear bolts and the PTO has an overrun clutch. If I can't find one would another overrun work on the 'hog end? I'm leery of using a grade 5 bolt.