I made this desk about 4 years ago and the problem is that I did not leave enough room for the inset walnut drawer faces to expand and contract. Now the faces of the drawers scrape a little bit on the frame. My question is how can I fix this without messing up the finish of the drawer face. I am thinking about running a block plane around all the sides, but I don't want to chip out the end grain. I thought about using a belt sander but I don't want to make the drawer uneven. There has to be an easy way. Right? Please help.