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Having lifted cars off (very very very thin) dead people numerous times, I have to recommend strongly against this technique, Bret.It might work for that mechanic, but all it would take is rocking the camper (or vehicle) off the jack stand and having one side drop down. The worst part of dying by being crushed by your vehicle is that it's usually not quick. The vehicle comes off the jack and lands on you...the weight of the mass on your chest asphyxiates you as you can't take a breath. So you're still alive, but can't take a breath to scream for help.Never get under a car and kick at the wheel. If you do, sign your will (over to me please) first.
Thanks for all the suggestions/support. I finally got it off last night, after a lot of wiggling and tugging. The problem was strictly the tight fit of the wheel opening over the hub. After saying I was going to grind the wheel opening after I got it off, I decided to try sanding the part of the hub that was exposed - worked like a charm.