I have been doing backhandspring series down the mat, and never can seem to get my first couple of handsprings with straight legs, they are always bent a little bit at the knee. I dont know if its back flexibility that i need more, i think i have enough, i can do backbend and ups, but dont know how to use it that much when i do a bhs. I have enough flexibility i think, with shoulders and back, but my back always turns out straight kinda when i throw a bhs, with bent legs. I have been told before to throw ur hips up to get it to bend more but not as much luck as i would like with that... any ideas?