This machine is merging from two condensers (A and B) to three chromatographs (1,2,3). The belt in red refuses to move in any direction no mater what order (or configuration, space given) I lay it in. Normally I’d merge the two lines before splitting back into three, but I was space limited here.
I see why this is likely happening - either direction could be correct in terms of heading towards inputs. I think this highlights a need for manually specifying belt directions for more complicated intersections like this. Can provide a save if it would be helpful, though I think this arrangement should be repeatable