Made a Generic Model instead of Java Model and Can't Import

Okay, so I just spend around 2-3 hours modeling and texturing a scythe I really like in Blockbench. However I ran into an issue at the end.

I made the model as a Generic Model because for java models, I cannot rotate cubes anywhere except on the 22.5 degree axis. This was an issue for me because the Scythe has a slight bend and I would not be able to make it properly with a Java model. When I tried to convert the model to a Java/Item model, the scythe got all messed up.

I already tried importing it as an OBJ model, however the model is too complex for that to work. 

Is there anything I can do to allow myself to save this model and use it in game??

Any help will be appreciated!