Did you try to repeat your tests with the selector mounted in place, feeding the filament from the back of MMU2?
I think that when the filament passes through the gears and the pulley body, it is straightened and the path doesn't allow it to bend that much.
Did you try to repeat your tests with the selector mounted in place, feeding the filament from the back of MMU2?
I think that when the filament passes through the gears and the pulley body, it is straightened and the path doesn't allow it to bend that much.