What did you do so you could start a game without it tilting ?

adjusted the start relay switches? i'm not sure. i did fiddle with the tilt switches and when i press the start button 'tilt' flashes on and then off
maybe one of the tilt switches is barely touching and causing the 'halte' relay to pull out?

it seems that the 'halte' relay needs to be energised for the flippers to work