Most any ramrod is going to try to move forward at the shot - and most git er dun. You can tighten one up doing such as you have, or you can remove the forearm's ramrod spring and give it a bit more of a bend so it puts more pressure on the rod, or you can simply bend the rod a wee bit.

My first impression of the Accura's rod was much like yours - perhaps even worse as I was thinking it was more like a Knight ramrod. But CVA at least does that tapered crimp which securely holds the jag in place. After using the CVA rods a bit, I decided not to replace them.

If you do decide to replace them, take a look at http://www.cainsoutdoor.com/shop/item.asp?item=318320 that one should be a near perfect fit. Made from Delrin, they are TOUGH. The fittings are pinned so it would be extremely difficult to pull one off. The loading jag end has some interesting features - that worm works reasonably well to retrieve a lost patch. They are also quiet rods.