If this is a CTC3D or similar clone, then levelling the nozzles is fairly easy.

Remove the fans from the front and you will find an recessed allen headed screw in line with each extruder. Simply slacken this off and ease up and down the extruders until they are both just touching the bed. Tighten everything up and then re-level the bed.


For some older designs, you may need to shim the extruder mount to achieve the same objective.