Need the size for a standerd servo to make enlogated horn

I need to make the servo horn a inch taller on each side so it can reach a light switch. It needs to mount to the servo also.

The issue is about modifying a servo horn in an OpenSCAD project for a light switch automation device. First, examine the existing OpenSCAD files in the repository to understand the current servo and horn design. Determine the standard servo size and how the horn mounts. The goal is to design an elongated horn that extends an inch on each side while maintaining the mounting interface.

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