When I go to load the filament onto the makerbot via the smart extruder...it feels like the filament is hitting something and zero filament will come out.

I tried the push the filament really hard through, but no luck.

When I push the filament through it gets to about the very start of the heater box and that seems to be where the filament comes to a blockage. (I did this by measuring the filament as far as it went in and compared it to the whole smart extruder)

It seems to be heating up fine to 215.

Any ideas?