This thing is straight up amazing!

Is there some type of tape or plastic cushioning thing to protect the bar from scratches? Since it's metal on metal. Maybe it's not even needed?

What do I do if I the handlebar has to be put on the stick but it won’t fit.

What I want to know is how to raise the bar up, there is an allan key bolt on top with some warning sticker on it. Is it like all the old school bikes or is there a trick ? Seems to do nothing loosening the bolt to slide it. Diamond back Ascent 1990s era