How do I replace the microphone?

How do I open this headset up and replace the microphone? I will be "borrowing" one from a parts unit im getting off ebay as my current one has the pvc(?) sleeve on the microphone falling apart and peeling as it catches on the left ear's housing.

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Review disassembly procedures for several SteelSeries headphones if none are your model so you have an idea where to start; SteelSeries Headset

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