Yes, I hear ya! Since I have gotten my Dummy, I have had my rear xtracycle assembly pop off carrying a load when I have to curb-hop. I cut some pieces of an old tube and put them over the four contact points and it helps somewhat, but would love to have something else. Don't think I wanna spend close to a hundred bucks for four whatchamacollars, though! I may give this a try. Seems like a bit of xtra tubage would work. Thanks!