I'm not the one interested in building this model, but I am saying to the guy who wants to build it that he doesn't need to worry about the tip stall stuff. The design, as-is, is difficult to stall. As a result, it doesn't snap particularly well, but does the 3D stuff about as well as anyone might expect. That's primarily what Mike designed it to do, and ofcourse wanted it to do sequence work well, but as with all compromises it does not excel in all areas.