I did glues our on. I also use close pins to move the water out further. I'm surprised that after driving 5,000 this year with the rig that the pins are still on. I would have thought the wind would blow them off.
Jim and Jane
2008 Cardinal 30TS
Trail Air Pin Box, Center Point Suspension
Reese 18K hitch - Garmin 1690 GPS
2008 Chevy 2500HD 4x4 Duramax/Allison, Long Box, Smartair
Nights camped in 2011: 120