why am I not getting a nice finish on my work on my lathe bought a new 8x16 mini that seems to be nice quality and smooth the only thing that concerns me is that when I increase the turning speed the feed rate also increases the book that came with it doesn't give me a lot of info wonder if changing the gears would slow the feed rate down or are they only for thread cutting any ideas would be helpful after fifty years I am having to pretty much having start all over again