Hi All, First of all, thank you for the makers of this website.it really help a lot.God Bless You!! I have a problem with my smash. I think its weak, that even an underaverage player can return it with ease. I even increases the tension of my string to 30lbs but to no avail. Please advice how to streghten my smash? is it my form or position before the smash? also, everytime i do a smash, my shoulder suddenly hurt. i also want to learn the jump smash. Thank you and God Bless!!!