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So the lower end machines have the sort of rotating cups, don’t they? That’s the way that they work and you can plug the rotating cups if I remember correctly. And it works most the time, but sometimes the balls don’t fall correctly and the cup remains empty. Is that what you mean?

Yes, the rotating cuff that you could plug or leave open still made it regular. So you could plug two and have three and that would leave a time space. Or you could do it alternately and then you got an extended time. Or you could leave them all open and then that would be the regular timing.

Yeah. But I imagine that that design is still sort of the entry level ball machine today. They’re pretty good aren’t they – they don’t often go wrong.... I think it depends on the kind of balls that you’re using.

That’s right, so yeah... irregularity comes with the different balls that can be used. So you really want a set of balls that are regular, because they come out at different speeds all sorts of things, with different bounces. Nothing wrong with this random type operation – it makes you aware of the irregularity of how you play tennis.

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