1.how heavy are you?
2.what springs are you using
3.how long have you had them
4.do you have everything set up correctly(pictures help)
5.what seems to be the problem(video usually helps for jumping)
more information is always good
most things can be sorted with more practice though, bocking isn't the easiest of things to get the hang of at first, where are you? there might be local groups or other people that can help you get on your feet etc.
