Uber Bump ^^^ Mate take lever blade off and pull the thing coming out of lever blade out and then rescrew it in you most likey unscrewed TPA off it and then it turned so it wouldn screw back on either?
Yeah, i ride a T-Pro now and its mint. Love the frame and how it rides, and i think Onza are a decent brand, as Ive said if it didnt have the grip shift id like it more, but when your just starting out it wouldn't bother you.
Try it on something small, dont hit it straight on, just start to backwheel abit later than you normally would and only tap it a tiny bit not staright into it! Dont be scared to try because it went wrong once.