Does it make a difference if it's not parallel? In my book, it doesn't.
I did check it for parallelism. It was out about .008" in the length of the saddle. And of course, most of the wear was at the headstock end of saddle.
When I rescraped the underside of the saddle, I scraped heavy on the less worn area at the opposite end of the wear on both the vee and flat. Once I did that, went back and scraped heavy in the middle for relief. After that, I started scraping to get good bearing at all four corners. Once that has happen, then I start scraping to get around 15-20 ppi in the bearing areas. Then I call it good. After doing all of that, parallelism was within .0015-.0020".
Again, how important is parallelism? I know all of the experts out there say it needs to be parallel. In reality, It could be 0.030" difference end to end, and it would never be notice in normal lathe operations. It's your discretion on how close you want to make it. And how much time you want to spend getting it there.
Ken