I even looked on a rental 331D, and sure enough, the drive motor covers were curled over on the bottom. When I got my baby a couple of months ago, I took them off, pounded them flat, and reinstalled them. Well, sure enough, after a few days of land clearing, they curled back up along the bottom again. I see a design flaw, in that the cover plates are not protect along the bottom edge, so any rocks you skip/slip off will eventually curl the bottoms up again. Again, I worry something will poke into the drive motor area and mess up the hydraulic lines/stubs/couplers and cause me a world of grief.... Has anyone permanently fixed this problem, or is it just user error? thx