By Gators Sliding Doors – Daytona Beach, FL | Updated August 2026 Where's the gap? Read it before you fix it Close the door fully and look at where the light shows. Along the top, even end to end: the whole panel is sitting low. The rollers are worn or wound down. Raise both adjustment screws evenly. If they're already maxed out, the rollers are done (see #1). Latch side, wider at the top: the panel is tilted, with the latch end riding high. Lower the latch-end roller a quart