Geeetech

Guys, if you have run into a problem that the nozzle is higher than the extruder carriage after homing, like this one below: Then don't worry, check the solution here:
Unscrew the upper nuts on extruder as the picture shows, and then lower down the two hotends to a proper height, and that's all.
But note that don't touch the nut on the heater block if not necessary, or it might leak!

The Geeetech I3 pro C is a dual extruder 3D printer with laser-cut acrylic frame. To maintain the garage-built feel and the handmade charms, Geeetech I3 pro C is also a build-it-yourself kit, which provide you an unforgettable step-by-step learning experience of 3D printer. Geeetech I3 pro C support 5 types of filament: ABS, PLA, Wood-Polymer, Nylon and flexible PLA. Now, with the dual-extruder, you can print a single two-color object, or you can print two objects in one print job, each made from a different color.

Indigo Card

I think this design is faulty, it pass only to very long heatbreak and is a nonsense. But if you tighten the extruder plate with screw of upper side of bottom bearing bracket this will lower entire mounting enough for your.
You see, I used M5x6 screw. Bearing bracket must be drill to 5mm at this point. Be aware, it is not so easy.