Hi. I have just finished the night city marble run and the balls all fall out of the back where they drop down from the top right. They fall out of where the thick perspex section is and no matter what I do they keep falling out. This is the only bit that doesn’t work. Please help
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Hmm be sure to insert the marbles in to the life on the side and ensure the kit is level? Pics would help also
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I agree with @Grey74 . Pics or video would be very hepful. I did this one without issues long ago.
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You can share photos or videos to help us easily understand and assist you.
Welcome to the community! I know other people have also mentioned this but pictures or videos would really help to diagnose the problem. Once you do that, members of the community or Robotime should be able to help you. Good luck and hope you solve the problem soon!
Welcome to the community, Mark! I haven’t built it myself; I hope Robotime can help you.
Welcome to the community @mark_eggett so sorry I would not be of help as I have not done any marble run but our awesome community members can help you out on this. Sharing a picture will also be helpful
Welcome to the community. I won’t be if any help as I have not done this one, so I will leave it to others to assist you.
welcome to thé communuty
@mark_eggett welcome mark i see @Grey74 has replied i hope his post can help you 
Hello,
We are sorry that the balls are falling out of your Night City Marble Run.
To help us understand and resolve the issue, could you please send a short video showing the problem area (where the balls fall out at the top right/back) to service@robotime.com? Once we review it, we will provide the next steps.
Thank you for your patience!