Can anyone explain to me why this HE V3 18mm Ti Nail I ordered doesn't fit my 18mm water rig? The fins are less than 18mm in diameter, so how exactly are they supposed to fit an 18mm rig? Did they send me the wrong size? I'm really confused. Did they send me a 14mm nail accidentally? I assume I shouldn't try to dab like this, right? On the site it says the nail should weigh out to 11.56g, but it only weighs out to 9.6g. I had enough trouble just trying to get this nail from USPS, now this is a whole new headache.