Now that might be the cause as these mowers are meant to be lawn mowers and not Farm type bush hogs. Now I did scrape out a Bolens MTD mower that the deck was beat up so bad that sections were completely cut out by the blades and with the hangers completely ripped off. I even had a Craftsman where the one of the hanger was ripped out the deck like an old beer can pull tab. Most this was caused by hitting tree roots at high speeds.