The game is currently set at a medium mode via dip switch settings i.e you have to hit all 6 standups in one ball to light up one of the three randomly selected ball save/locks. If you don't hit all 6 centre targets in that ball its not saved so start again - gives you a bit a target to aim for.
Well done on getting multiball 2nd game in. Its a frustrating game at times as you work hard at building multiball and its so easily lost.
Tip is getting the spinner lit + excellent points right there