electric blind.........first of all the dam thing was sticking going up and down and then i gave it a good push and the dam thing has snapped where it runs up and down on the runner.........now what do i do.........can i replace the plastic bar that has snapped and is it easy to fit..........

please help
you have helped me with my stereo and my electric window....you are all very intelligent on here..........yes i am creeping!!
oh and i owe someone a beer....you know who you are!
