I have the da Vinci 1.0. I just found a part on the bottom that I do not know where it goes. It is a screw that looks like the ones used for calibrating the bed, however it is a bit smaller and the three screws for calibration are still in place.

Thanks for your help

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Hi, it sounds like the transit screw for the bed. Have a look at the very beginning of your instructions or search for an unboxing video on youtube.

Andrew