I’m trying to use the CurveTubeSnap brush based on a demonstration I saw. He adds a curve and uses the size option to taper it. I get that to work with no problem but where I get hung up is that he can click on any point on the curve and the thickest part of the taper follows his click. So if he clicks on the center of the curve the middle becomes thick and the two ends taper. Or if he clicks on either end the taper flips. When I try to do that, nothing happens. Now, I get the green bush cursor and I see the green points on the curve when I move over it and everything else is masked but nothing happens other than moving the entire curve. Any help or insight would be greatly appreciated.