On Tue, 18 Feb 2020 12:56:32 +0000, newshound wrote:

As Tabs says, a plane is really the way to go. Certainly better to
remove the door too, but can be done in situ if there is not too much to
remove. If the problem is really quite localised (say only a few inches
long), you could get away with using a small plane.

Surform.