Jack, I'm new to this forum, but noticed your headlight inquiry. Assuming your Tradewinds is an LTC model, the headlights are from a Ford F150/Bronco - 1995, 1996 models. Instead of using Ford lights, NRV used a cheap aftermarket version. I believe they were TYC brand. Mine did the same thing. They aren't actually scratched. They have hair-line cracks from exposure to the sun.
I replaced mine last year. You can purchase directly from Ford or used from a wrecking yard, or the same TYC lights you have now. I elected to replace mine with lights similar to the ones at this site -
Xtralights
They produce much improved night visibility than what I had before.
Hope this helps.
Ken