Hi, everybody: I just got a silent partner star (new) and played with it for three times. The problem for me is that I can not contorl it. Even I set the slowest speed(no spin or top spin) and put the machine far behind the baseline (3-4 meters), the ball always went way out the other baseline (the speed is to high?). I also tried to adjust the elevation, it still did not work ( hit the net or to the sky). The balls I used are brand new "Dulop Championship all courts". Anyone can help me to figure out how to deal with this? thanks. the other problem is the remote control. it worked well at first time, after that it only work in about 6 meters between it and the machine. I just replaced a new battery, but nothing changed. HELP!!!!!! thanks.