window hardware

well, since i had to order a reproduction drivers side door glass for my 70 duster this evening, i figure id take a look at why it wasnt ever working well in the first place.

the nylon rollers(?) that come off the window regulator arms, and go into the "C" channel that bolts to the glass, are worn to the point of almost being square. anyone know where to get reproductions?

and ill let yyou know what i think of the AMD glass when it gets here.