I know what you mean in cutting those fretwork things that keep getting smaller and smaller. I too had that problem, oh no, not another one. Also, when I started scrolling, (sometimes still do it), when cutting long straight lines or circles I will take my eye off what I'm doing to see how much further till I get to the end. Invariably, I will get offline. Sometimes, I have to start over because I messed it up so bad.
Jerry