What is the solution to improve TD functionality if it opens too late?

Improving terminal device (TD) functionality when it opens too late can be effectively addressed by moving the baseplate anterior. This adjustment allows for more efficient movement and timing of the cable system, which is crucial for the timing of the TD opening mechanism.

When the baseplate is moved forward, it alters the angle of pull on the cable system, which can lead to an earlier activation of the TD during flexion of the wrist or forearm. This mechanical change directly influences how the TD responds to the user's motion, resulting in a more immediate opening of the device when it's needed most.

The other options do not directly resolve the timing issues associated with the TD opening. Increasing weight on the TD may make it harder to operate, while changing the forearm material could affect strength and comfort but wouldn’t directly address the timing of the device's opening. Adjusting cable tension may seem relevant, but it could complicate the mechanics further rather than provide a straightforward solution to the timing issue. Thus, moving the baseplate anterior is the most effective approach in this scenario.