well, in his defense, there was one time that i changed tires on an auto transport at uhaul, and forgot to drop the trailer off the jack. drug the jack for a while, and did note it felt kinda funny. then the trailer fell of the jack, jack got stuck under wheel, making bunch of noise, and making trailer harder to pull. i thought i had better check it out, and so i did. shoulda took pictures of what the jack did to the pavement
did i mention i was pulling this in the tempo?