How should I handle small openings if the Refacing tools don’t fit?

We recommend using a medium file for small openings. After trimming the PSA as close to the edge of the cabinet frame as possible, use a file to clean up the edges. Hold the file at a near 90-degree angle, and use a push motion, moving the file away from you). Do not pull the file back toward you as this can lift the PSA from the surface.