^^ What he said. I've had to modify clear plastic before, and have had pretty good luck sanding it down, and then smoothing it out with finer and finer grits (even using just those Squadron sanding sticks) until I just start to see a satiny shine. Then, I dip them in Future, and >Poof!< Pretty glass!
It's amazing how much Future will fix things. Try it on a couple of parts.
Gene Beaird,
Pearland, Texas