Ok,been playing around with it ,as long as I have reset the AX relay it will shoot the ball out, drain and will eject the next two no problems,pop bumpers and slingshots are working and the drop targets,altough they don`t reset properly,one target is getting stuck and if I pull it up it`s ok,after the third ball is out and drained the score motor keeps running,all four score reels are rolling over on player one,I haven`t replaced the burnt coil yet so I am hoping that might fix some of the problems 
Nino,the ball return seems to be working..
Gday Peach .
99% chance that the reason the score motor keeps running after the last ball drains is because the game over relay is not working , when you activate the AX relay, this causes the machine to start a new game (as it would if the game over relay worked and then you pressed the start button to start a new game) . The drop target not resetting properly probably means that mechanism needs to be pulled apart and cleaned (if you haven't done that already) .. my 2c anyway ... you are doing a fantastic job
Keep up the great work, you are nearly there
