I have a Silent Partner Smart ball machine and I have some problems understanding the instructions. The machine works great when dealing with the simple settings of high, speed, spin and feed. The 3 memory settings also works as advertised. The problem I'm having is with the rest of the settings. When I press the "Preset/Match Play", "Sweep" or "DR", the machine starts throwing HIGH lobs. When this happens, no matter what I do, I can't lower the angle. I purchased the machine late last year and it did the same. Because of the weather and access to the tennis courts, I didn't have time to play more with the settings. Today, I spent a good amount of time trying to make any of those features work properly but nothing. The light that shows me the elevation of the ball shows me as beign at the lowest setting and it throw lobs to high that end up hitting the fence way off the baseline. HELP!!!!! What am I doing wrong????? I will call SP next week but I'm hoping someone here has the answer to use the machine tomorrow Sunday, thanks.