One of the bedroom doors in my old home is pretty badly bowed. I found an extra door in the attic that looks like it could be a perfect replacement, but it's 3/16" too wide. I am a "rookie" handyman, with very limited tools... Is there any easy way for me to shave 3/16" off this door (i.e., is there an inexpensive tool I could buy), or do I need to call in our handyman with his "pro tools"?