This is what I came here to say. When I swap hoppers and need to swap paint, I just put the neck of the hopper with paint into the top of the other hopper and let it feed. Super satisfying to watch.
Did they change the original IR at some point. I have an IR purchased summer 2020 and only the back half is removable. When did it change so the entire top half can be removed? Also can the new top half just be purchased and fit on an existing lower half?
Depends. You got money to burn? I got an ltr for my mech since the ir2/spire 4/ctrl too out around 12bps. But for an E gun, the spire system never fails. But with a speed feed and ramp your out $180