Help! Cube Acid was a failure - suggestions?

[Medikamina]

Pardon our interruption...

To operate them, you push down on the lever, then rotate it to turn the screw. When you let go, you can turn the lever independently of the screw to make it look neat. It might be the other way round to that, but I'm sure you get the idea.

Thanks, I’ll get those ordered then!