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@rive_gauche
headset types claims debunked > http://chrisking.com/files/pdfs/Int20HeadsetsExplained.pdf
headset types identified > https://www.canecreek.com/resources/products/headsets/technical-specifications/headset-identification-and-specification-guide.pdf
you'll need an accurate measurement device (a digital vernier caliper > http://www.ebay.co.uk/itm/like/301144353498?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&chn=ps&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0-L&ff12=67&ff13=80&ff14=108&ff19=0) to take measurements around the cups to determine deformation