Hey Nicholas,
LEGO designed three parts, that are similar:
30384 Windscreen 7 x 4 x 2 Round
89762 Windscreen 7 x 4 x 2 Round Extended Front Edge
92279 Windscreen 7 x 4 x 2 Round with Handle
You are right. The part you are requesting (the second) is not available in LDraw, yet. But the first one is available. You might use it as space filler until the second one is drawn, too. I think that will happen shortly.
Rolf
LEGO designed three parts, that are similar:
30384 Windscreen 7 x 4 x 2 Round
89762 Windscreen 7 x 4 x 2 Round Extended Front Edge
92279 Windscreen 7 x 4 x 2 Round with Handle
You are right. The part you are requesting (the second) is not available in LDraw, yet. But the first one is available. You might use it as space filler until the second one is drawn, too. I think that will happen shortly.
Rolf