I'm still new to using hand planes, but I've finally got to the point where I have my No.5 plane in decent working order, with a good, sharp blade. But I find that every time I plane an edge, I pretty consistently end up taking more wood off the far edge of the board. Then I end up having to spend time on the closer edge to bring it down to match the far edge, which I find really difficult. Most recently, I've been working with hard maple about 1" thick, held in a small vise. I'm guessing it's got something to do with applying uneven pressure on the work piece. Has anyone else had this problem and if so, how did you overcome it?