Best way to trim beadboard
I installed some beadboard wainscotting for my daughter. The outside corner wall where it starts is a little off vertical and the top lines up with the corner but the bottom sticks out 1/4" or so. I'm going to trim it up before I put the end cap on and am wondering the best way to go about it. The material is hardboard. It seems to me my options are to 1) use the router and a a flush trim bit,which will be pretty messy, 2) use a block plane or 3) use one of those flush trim saws. Any thoughts as to the best way to go? I'm trying to do no damage to the wall so I don't have to repaint it.