I had signed up for the Group Buy for the C3 line of the Tech-Spec tank grips and for whatever reason never got any reply back from the company. So I called Patrick over at Tech-Spec and he sorted the whole thing out over the phone. I got it paid for and it was in the mail the same day. I was super stoked to get the package in the mail. The grips are pretty simple to put on, just make sure to clean the tank.
Anyway, Patrick over at Tech-Spec is a great guy to deal with and super easy going. Good product and good people.