Rostock Max V2 TPE / Ninjaflex Custom Extruder for soft filaments

I had a real struggle trying to print ninjaflex on the rostock max v2 and even with the filament support mods people suggest I didn't have any luck.
I designed this extruder and so far it hasn't had any issues with printing soft or normal filaments.
I used the factory red lever from the Ezstruder assembly along with its spring and other hardware that I had left over from the rostock kit. If you don't have any of that hardware around you can easily source it at a local hardware store.