I have this problem. Days ago the PPA gate (it has an old plate that I put photo, which has a single grv button). It opened and closed, but it did not detect the end of the race when closing and therefore passed by. But if you cut it with the remote control before it could be used to close and open. When trying to "fix it" take out the sensors and the closure is cut. In the part that is a kind of long glass tube, the tube broke but the contacts were soldered with tin. When you put it back the thing got worse. Not only does it not detect the end of the race but when trying to record the course, it now remains that it only closes but does not open. Basically what I try is this: I put the jumper on prog, press the left button of the control and at the same time press the record button. The same with the right button. If I press the 2 buttons together it does nothing at all. I understand that the above makes me recognize the remote control. Then I tried as I saw, open the gate halfway with the key to run free by hand. Then close with the key, which in my case is like a long allen so that the gate "hooks" again. And take out the jumper leaving it in a single pin. When he pressed, he expected him to walk and recognize the finals. In the end I was disastrous. Any help how to improve it? Thanks in advance.