Have you tried gently re-bending it to become straight or is that impossible?
I've seen a bunch of Porsche scripts that are wavy (up and down along a horizontal line) and thought that the owners were not too careful in putting them on, OR they didn't fully realize that the nose is never straight - it curves vertically and horizontally. Never thought that they might have been careful but that the thing flexed later on.
I got mine really straight, then gently bent it horizontally to fit the curve of the nose while keeping it straight, then used a 12" X 1-1/2" piece of .094 acrylic (a clear piece of window plastic - Home Depot) to fit the same nose curve, marked THAT with the script and drilled it for the script studs. Then assembled the acrylic to the nose with painter's tape and used it to drill the holes for the script. Did that both front and back and once the scripts were assembled then never changed or warped. Some of the studs were a tight fit (mostly from the inaccuracy of using a hand drill for multiple holes) but it pressed in and then I epoxied it in.
Another thing that occurred to me is that you might be able to straighten it a bit between studs. If I remember, there are five studs? That gives a little space between them to nudge. Can you post a good picture??