I bought this kit not knowing that the canopy & windscreen was modeled with a seam down the middle.
I had the experience with clear part's like this, so all I did was sand off the ridge using "3M's wet/dry sandpaper. I started with 320, then used 400, 600, 800, 1000, 1200, 1500 and then with 2000 grit.
The canopy was polished, then I dipped it into an open jar full of Future. A few days later I mask the canopy and painted on the frame lines.
6 additional images. Click to enlarge.