What's wrong with bumper sewer hose storage???

In my previous post I mentioned that I had purchased a bumper end cap with a flexible center push-in to lock it in place. :C:C

Well so much for science, the center push-in core fatigued and I now have a separate center piece with outside collar. It does hold the slinky however and has not flown off like the original. :R

I will eventually buy another end cap and drill the bumper and cap for a small locking pin but that will have to wait until I get home.