Answered: Modify Limit Switch

Rule 15 say sensors may not be modified in ANY way

<R15> Parts may NOT be modified as follows:
a. Motors (including the internal PTC), extension cords, sensors, controllers, battery packs, reservoirs, solenoids, pistons and any other electrical component or pneumatics component of the VEX Robotics Design System may NOT be altered from their original state in ANY way.

The description of the limit switch 276-2174 includes bendable as a feature.
276-2174 Switches send a signal to the microcontroller when they are triggered. These fine switches are great for detecting subtle events, such as when a robot arm has reached the top or bottom of its motion.
• Bendable sheet metal switch “arm” is very versatile

Does bending the metal arm violate rule R15?
Does cutting or removing the metal arm violate ruleR15?

No, teams are allowed to bend the arms on the VEX Limit Switches, as this is part of their normal functionality.

Yes, this type of modification is prohibited.