I use a single piece of 1" PVC pipe with an end cap. A hole is drilled  
through the end cap to allow the stay to fit through it. Ed's is basically the  
same version, but uses two pieces of PVC, one fits inside the other and acts as  
a bearing.
A link to a picture site is attached.
 
_http://members8.clubphoto.com/kimberly513138/687351/guest.phtml_ 
(http://members8.clubphoto.com/kimberly513138/687351/guest.phtml) 
 
 
Rummy