Curt,
>>The frame is, indeed, aluminum. I would consider the information given out by the competitors to be false, especially the one who told me the nose cap had wood in it.<<
There is some wood in the nose cap usually where a fastener is needed like for attaching a hold down for a wire harness or cable for the hood release. The pieces are small and in my opinion NOT structural. Ever try to use a screw in just fiberglass about 3/16" or less thick to hold something?? I wish there were a few more but that is me. I added some where I was screwing through the fiberglass for "accessories" G There is also some steel in places where some additional structural strength is needed like the Generator door latch area. Overall I am pleased with the structure of my Newmar.
If I were to fault anything, it is the use of NON-Stainless screws where they are exposed to water/weather and there are only a few places like that, the hinges on the generator door, some places in the water closet etc. I replaced the ones of concern for less than $10 after 5 years, so that is not even a big deal. VBG