Sailer, what is the load rating of the 20s. Are they 3640 Pounds like the 18s?
When I sold my 1974 Wilderness Fiver 22 years ago, the nice old girl that bought it asked me to deliver it as she did not own a TV yet. She had a level pad on the top of a steep driveway and I dented the rear top corners of my 81 F250 4x4 which was a fairly new truck at the time. I too had 9" of clearance but it was not enough. I have a long box now but my hitch is a slider and if I find myself in a similar situation, I will slide the hitch back to reduce the angle and give more clearance.
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