molding my own part(s)

Sumi,
It might be easier, cheaper, and less heartache to polish out the scratches. Forming hot plastic sheet at home is far more difficult than it sounds. Forming the hot plastic over the original windscreen can melt and bend the original screen, and then there's the specks of dust that could ruin the attempt - do you hear the voice of experience here?
Try getting some 2000 grit wet and dry sand paper, cut a piece into 2 inch squares and soak them in water for 24 hours. Then carefully sand the scratches using plenty of water, inspecting often. when you've gotten to about the level of the deepest scratch, start polishing with a very good quality fine grade polish (I use Meguiars) on a very soft rag like flannel, then move to an even finer polish. Once the scratches are pretty well gone, dip the screen in Future floor polish, let the excess drip off, then allow to dry covered to keep off dust, and your problem should be solved.
Good luck,
Lee Tree

Lee,
Thanks for the reply. I'll try that when i can get around the kit again...I really feel terrible for ruining kit.

well if u wanna mold try www.warmplastic.com for instructions