I absolutely love a beautifully executed tckatchev. For you level 9s and 10s out there trying to learn this release, check out the youtube video link I found. It shows a University of Arizona recruit's bar routine executing a text book tkatchev. Notice the incredible height she gets and her perfect body, leg and toe position over the bar. She is also doing it right out of a blind change, which is really hard. Then she goes right into a beautifully executed pac salto. Imitate this one and you will have a pretty good tkatchev!