Ok well wen doing them i hold the fader with my index finger only . The guy i met today could do them by doing the pinching technique and then holidng it. hard to xplain really. A lot of stuff i do is usin the wrist. chirps and everything, some people let the fader flicker where as i cnt do tht. Its not precise enuff for me, and it sounds sloppy when i do it. Also i think crispness and wotever depends also on the sample . I can go on and on but its my opinion and it may be different for all of u....