So I'm having the most perplexing issue. For whatever reason filament in the left most path of the Y adapter (associated with t0) doesn't always retract out far enough. It always loads fine but unloading it sometimes seems like it stops near the front coupler. Anyone have any ideas on why? At first I thought slipping but if it was slipping I would expect loading issue. I've double checked its making it out the extruder, and when the issue happens I can wait till t1 is selected and manually back the filament out clearing the path.