base plate for toad is bent

First, look ands see if there is any damage to the base plate. Is everything still straight and square? If it is slightly out of shape, can you align the holes that were drilled into the frame, by hand? If you can, you can use either Grade 5, or 8, they just have different torque values, #33 and #47 respectively. More than likely the 3 nuts/washers with the rods attached, have been lost also. You can either order new ones or make new one yourself if you, or someone you know can weld. Remember, use the RED Loctite when assembling, and the correct torque. I know it is a hassle to recheck the torque, but it would be good to check it in 6 months to be sure they are still tight. Also if the drilled holes are slightly puckered, use a hammer to make them as flat as you can with the rest of the area. Good Luck.