I was wondering if someone could recognize the mod on this head, I bought it a few years ago and never used it, found it today and cant remember what it was used on. For some reason "Terra Alps" comes to mind but as shown in the picture, the surface was milled .054 or so and the squish re-cut, I'm no expert but i assume this shortens the dome, raising compression. If someone has had this done and has an idea what it is, and dont have the equipment to cc it, I'd appreciate the feedback.
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