This simple print will allow you to use the non Flash Forge Creator spools that do not have the indented area for the spool but that do have the big spool hole. By extending the length of the spool holder the spool will stay clipped onto the spool holder even though it cannot go all the way to the back of the Flash Forge CP.

I also created extenders for the guide tubes that fit in the pre-made slots (back of the box case) for the tubes that come on the box allowing the filament to standoff from the back of the printer allowing smoother feeding into the guide tubes. That piece can be found at http://www.thingiverse.com/thing:2331394.

TIP: Get rid of the black fill tubes and buy refrigerator 6mm ice maker clear tubing so you can see your filament status and replace the tubing that comes with the printers.

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/781Wguf4STm