No, you don't risk voiding your warranty unless you damage something. By law in the US, they can not void your warranty, they can only not cover the damage you create. Just make sure you know what you are doing :-)
They can't void the warranty if you open it. They can only not cover something if you damage/break it. It a law from the 70s. Also if you read the warranty, it says that ..Damage caused is not covered..."
Its a T6 SECURITY bit that is needed. Not just a T6
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