Looking for replacement sill track for sliding door

I have a Crestline sliding patio door, Select 250 Series 72" W x 80" H, that was purchased at Menards in August 2020. The sill track is cracked, affecting the ease of opening and closing the door. I've already contacted the manufacturer and learned that they discontinued the vinyl line for windows and doors and no longer have any parts or pieces for them other than glass. I've attached a photo of the cracked sill track. Would you have a suitable replacement part? Thank you.