I seam to have a tilt switch that is not correct for my kit, projects 8 & 11. The tilt switch provided has 4 pins. They are so short ( 3mm) that they will not stay plugged into the proto board. This is especially problematic when the photos show that the switch is to be in the horizontal position to operate correctly. Do I misunderstand the instructions, or do I not have the correct tilt switch?