I found a rulesheet which says slingshots score 10 points. It seems none of my slingshots score. I will test them without glass later, or it's probably a setting?
And one more thing. In case I run the red light, but the shot is weak, the ball lands in the first hideout. I receive the getaway message, and a new ball is loaded.
If I shot this too weak, it lands in the first hideout. And from this point, nothing happens. Have anyone experienced the same?
Are there any "mission impossible shots" topic? How the hell I did this? 
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Added 99 days ago:
Slignshot scores:
Left is counting 10 points, but if the scoring is too frequent (tried without glass), there are shot which are not registered. I guess the ball cannot be that fast to return. But the right slingshot doesn't score anything. I think there must be a switch responsible for scoring which is out of order. Am I right?