Use clothes pins instead ...
Since we use a storage cover, we didn't want to install the extensions - thought they would either break off or punch through the cover. Got an idea from another forum to just clip a spring clothes pin on the spout. Works like a charm, and just pops off when it is time to put on the cover. I try to remember to take them off before traveling, but have forgotten some times, but never lost one in transit ....
Even if we did lose one, its only a clothes pin!
Bill and Kate
Stone Harbor, NJ
2005 Jayco Jay Feather 29N (Salty Dog House)
2005 Ford/Quigley 4x4 E350 Van 6.0 TD (Moby)
Reese Pro Series SC Hitch