When the bobbin thread is threaded through the bobbin tension and you pull on the thread, the bobbin should rotate counter clockwise, not clockwise.
Your thread is not following the proper thread path through the tension slots and spring, and is binding at the end of the tension spring.
When threading the bobbin case the thread goes into the slot just next to the thread and comes out the angled slot just above that. When this happens the thread makes a right angle turn and will stay in the groves as the bobbin rotates counter clockwise.
Another thing is you should snip off the tail of thread coming out of the hole in the bobbin. That tail can cause troubles.
Joe