I fixed the top belt (thanks to the other comments) but what a great and clean blueprint. 2nd playthough and I wanted to start without using all the improvised building I used. And this helps!

Yeah the top floor screw belt feeding the Assembler needs to be changed to a Mk2. The conveyer is a Mk2 already. Other than that awesome!

Brother, it has a flaw, I love your design but I think that on the top floor, there is a Conveyor Belt mk1 on the screws that should be mk2, I am a new player and the production is irregular, I don't know if it's just because of that but I will continue reviewing haha

I love these setups for making a really nice starter grid! You're a 5 star!