These are Weathershield crank up / out awning windows (Qty. 4) and several of the black plastic pieces shown in Images 9834 vs, 9835, & 9838 are broken / half cracked off. They are used for sliding in the vertical tracks when the windows are cranked open/up. The rest the brackets they are attached are totally fine but these plastic coated slides appear to be riveted or attached in such a way that the entire piece of hardware (which attaches with screws) may need to be replaced for them to operate properly. Otherwise, all I would need is the steel / plastic pieces (min qty of 4 and max of 8)
Can you help me find these parts?