Review on 🧩 Unleash Your Creativity with MECCANO Erector Geared Machines Building Set by Peris Auditore

I'm having a hard time understanding all the good reviews. I gave it to my 11 year old son for Christmas. Instructions are complicated and assembly requires Job's patience and watchmaker's fingers. My son and I did it together and neither of us could have done it alone. When you finally do the "motor" you have two choices: tighten all the nuts and it won't move. Or loosen them a bit and he takes ten steps and then falls apart. There are pictures of other machines, but no instructions, and most (or all) don't have the parts needed. Does Erector really do that?