The Replicator (Dual) Extruder Upgrade

Based on Replicator 2 upgrade i have built similar upgrade to fit the Replicator (Dual) or Called CTC Printer .
you will need to download and print all the files EXCEPT
Replicator Dual UpgradeLeft & Right.stl
it is just for overall Look .
you will need to buy the regular upgrade kit for the replicator 2 (Only The Kit) + the upgrade Drive Gear + screw 3mm Diameter
by 5 to 6 length as at the picture ( Black Screw )
when you buy the upgrade kit you only going to use the 1 spring & the 1 Drive Gear & 1 screw 3mm diameter by 10mm length and of course the black screw that i mentioned above .
installation will be the same as the instruction in the following
link :
http://www.thingiverse.com/thing:53125/#instructions
or the video which is provided by Makerbot team :
https://www.youtube.com/watch?v=ZdOS5NP5eaE&feature=youtu.be