Sunroof issues

[vanislander]

My 2010 Ram's sunroof won't open, it vents and closes, I had the glass off and found that the left plastic sliding mechanism has broken, I'm wondering if anyone knows if I can buy just that part, and where I could find it, my local dealer says I need a whole new sunroof $$$$

 

[Cummins12V98]

Check with a junk yard.