It's believed Kevin voluntarily left/disappeared from WA. He then vanished from his campsite in OR. It's not clear whether he left OR voluntarily, but let's assume he did.
Kevin was a biker which might explain the ring found with JD. The number on the ring makes me wonder if he was affiliated with a
one percenter motorcycle club. If so, then he could have been running drugs/guns/etc. from Mexico which could explain his murder in Texas. Another thought is that he might have gone into hiding after getting into trouble with the biker club. That would possibly explain why he was using shelters and fake names. I can't explain away the difference in jewelry except to guess he might have traded or purchased jewelry at a rally along the way from OR to TX b/w Feb & Oct 1987. There's also the chance that he was pretending to be a 1%er with a fake Harley "1" ring. IIUC, faking brotherhood, just as stepping out of order w/in the club, could get someone killed.
Kevin Gordon Hill – The Charley Project
The National Missing and Unidentified Persons System (NamUs)
Details of Disappearance
Hill was last seen at the Oregon Caves near Cave Junction, Oregon on February 28, 1987. Authorities believe he had previously abandoned his car in Yakima, Washington, where he lived, and driven his motorcycle to Oregon. He was last seen inside one of the caves and has never been heard from again.
After Hill's disappearance, his motorcycle, campsite, belongings and identification were found abandoned. His disappearance remains unsolved. Both Oregon and Washington authorities are investigating.
Circumstances of Disappearance - Kevin Hill was last seen in the Oregon Caves near Cave Junction, Oregon on February 28, 1987. He was described by witnesses as being inside the caves, and his motorcycle was found abandoned near this location, in addition to a campsite with some of his personal items/identification. His vehicle was subsequently found abandoned in Yakima, Washington. It is believed that Mr. Hill most probably abandoned the car in Yakima (where he last lived) and drove the motorcycle into Oregon state. He has not been seen or heard from since.