If the jerking you are referring to is the fore and aft movement of your existing ballmount in the receiver, then the Convert-A-Ball Cushioned Ball Mount would certainly help to reduce that. Though the ball mount has a 10,000 lb capacity, the cushioning would still be effective for a 3000 lb camper.
If the jerking is primarily caused by slop, which is a ballmount that fits loosely in the receiver allowing some up/down and side to side play, an anti-rattle device like the Roadmaster Quiet Hitc view full answer...
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