when i do duel extrusion prints my left head moves to the right and starts making a awful clicking sound .
does anyone know what i need do to fix this.
Does this happen when the printer "homes"? In other words, when it moves the 2 heads in the back right, it should hit the stop and the printer knows that this is the furthest right it can move. Does your printer do this without the grinding sound? If not, your stop sensor wire or sensor itself may be bad and it is trying to move the head further than it mechanically can.
Need a bit more info.
it only happens when i am using two heads each head individually works its only when i try to do something that uses both heads.