Thanks for this comparison. It made me rethink actually using the phase 1 helmet. I really wanted a clean phase 1 with the heavy repeater to represent Hevy.
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I set out to lower the phase 1 and started by swapping the neck socket from a phase 2 helmet(right) for the phase 1 socket(left). It does a pretty good job of lowering the phase 1 helmet.
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I needed the phase 2 socket so I did some surgery and cut down the mounts inside the phase 1 and lowered it that way.
stock and the one I lowered:
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