What's wrong with the radio? That but rarely has anything to do with SWR. If you have SWR issues, you'll have 'em regardless of what radio you've got. It's the antenna that must be solved/reconciled , not the radio. it sounds, as suggested, as if you have ground plane issues related to the tailgate and where it's mounted in relation to the rest of the body. If your jeep has a hard top, I'd consider moving the antenna to the roof; its the best place for it. Second, I'd consider using a gutter clip mount to keep the antenna out of the occupants' near field (exposure to RF). Then I'd go for the hood, tho its not exactly my choice due to 1) noise potential from the engine and computer. 2) again, RF exposure to the occupants. But...………….then we do what we have to do in pursuit of our hobby, eh?