##### TL;DR

I will like you to synchronise belts speed##### What ?

Yellow : half speed as the red oneRed : half speed as the blue one

Blue : twice as red and four time of yellow.

##### Why ?

Simply because the blue belts does not match the splitters logic by working 3 times faster than the yellow and 1 time and a half the red belt.If it's done like my suggestion, we can efficiently use splitters as one blue feed 2 red who feed 2 yellow.

Thanks!