Threshold 4000 repair. Need some help.

I am still missing something somewhere. I rechecked everything and found a 300 ohm resister at 1k. Every thing else seems fine. Here are voltage readings at the transistors taken with 10 volts +/- input. Maybe someone will see something and give me a clue.


17160809902_4473cfa3d0_b.jpg

trans #

16976381369_351f97c6aa_c.jpg


16972440635_fd617fb424_c.jpg
400and4000 B