Howdy-- I'm looking at possibly getting some portable steps to use instead of the stock one (so I can have two steps up). I don't have my 320 yet, so I'm looking for the step height;, and then the height to the door. Someone posted elsewhere that the step was 8" from the ground and the threshold was another 10" from the step. I wasn't sure if this was for BD version, or if it was current info. If someone can verify, that would be great!