OK, Joe, I consider my knuckles rapped sufficiently! Actually, when I was working with a fleet of dump trucks on construction sites, we preferred wooden supports, all the way to the ground from the underside of the raised bed, rather than wedging a shorter piece into the frame. A dedicated steel pipe prop is preferrable, or the best choice was a split pipe surrounding the cylinder ram that acted as a positive stop when it was bolted around the ram. It was pretty common practice to support a D-9 Cat on railroad tie cribbing during a track change, so don't discount properly rigged wood as a support structure.
Jerry