So the initial problem is fixed. turns out the screw had been severed from the thermofuse, lodging it in the thread. Probably overtightened in the factory until it fractured.
Now its on, I'm encountering a few issues that hopefully can easily get resolved
I'm getting very low volume shots. The lever isn't catching until it's almost vertical, resulting in low volume and a very watery puck. I usually get a great shot upon initial startup but every shot after that results in this. Any suggestions?