Creality Dual Extruder

What I wanted to do was to put a dual nozzle (extruder) into the creality CR-10 in order to print ninja flex and either PLA or ABS at the same time

I used a Reprap dual nozzle from ebay: http://www.ebay.com/itm/121704584458?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Settings used:

Infill: 40% (maybe more if needed)
Material: recommended ABS or PTE, or any other material that has a high temperature resistance.
Screws: 5x M3 10mm length and two M3 Washers.

Things to c