Window Sash Parts

Hi,

The windows in my apartment do not stay open. The window balance springs seem to have rusted and the top guides have broken. I'm looking for help making sure I get the right parts since there seems to be so many. Window Measurements: 32" Tall x 34" Wide. If I can get some good information, I want to pass it along to my landlord so he can get the parts replaced.

First Picture: Window does not catch balance, I'm assuming because the window guides have broken.
Second Picture: Balance: 31" metal shaft of sash, 32" with plastic ends, Inscription: 3020
Third Picture: Top Guide: 5/8 inside width, 11/16 inside depth, 7/8 top width, 31/32 top depth

Thanks,
Matt