Been reading and trying to research but can't find the answer. Lots of information on the "special tool" to remove the pressure gauge but no information on the size. Is the gauge a 30mm or 28mm? I ordered a wiki 315 BAR 30mm from Edgunwest.com but I am not sure if it will fit inside the tube. What makes it even more confusing is I guess the special tool size to remove the gauge is 27mm? Any help would be great. I sent an email to Brian but haven't heard back yet. If you know, let me know? Thank you.