Puzzle Box v.1

A puzzle box I designed. Please help me and print out the pieces. My printer cannot print the main/chassis part because it gets a filament jam at the same spot every time. My printer has horrible auto leveling and I think that is what is causing the issues, but please tell me if I am wrong.

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Youtube: https://www.youtube.com/channel/UC4CR8YfE9R3f787X7P1D-5Q

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-Buy something and I get $5: joinhoney.com/ref/e1j5di
-I get 10% of your Swagbuck earnings: http://www.swagbucks.com/refer/Pug21