A layer or two of tape will protect the edges very well and there is a pretty wide tolerance on depth and width. Personally, I would do less of both...
That is way too much gap for a tightened vise and it will not securely hold anything but short pieces. Just fix it and no need to let it bother you....
OK, so the wheels are out of alignment. I presume you are simply holding a straightedge of some sort along one wheel and measuring the offset. It was...
Roll it up the opposite direction and lay it in a warm place, like in the sun. When it is pretty close, lay it flat in the sun, perhaps between some...