Are you sure about the output voltage of the BSR C1? On the web I see output voltages ranging from 110 mV to 430 mV. See:
https://worldradiohistory.com/hd2/ID...-Page-0013.pdf
https://www.adelcom.net/BSR%20Cartridges.htm
https://thevoiceofmusic.com/catalog/...ld&Categories=
The output of only 2-10 mV of the radio section seems too low to me. Looking at the schematic I would think the output voltage of the radio section has to be in the range of the output voltage of the phono cartridge.
Which of the two channels is working now? What happens when you temporarily connect points "F" and "K" to each other? By doing so both channels of the amplifier section will see the same input voltage.
With respect to the transistors, this might be helpfull:
SE1001:
https://www.radiomuseum.org/tubes/tube_se1001.html
SE4010:
https://www.radiomuseum.org/tubes/tube_se4010.html
AX1105:
https://www.radiomuseum.org/tubes/tube_ax1105.html
OC987:
https://www.radiomuseum.org/tubes/tube_oc987.html
OC988:
https://www.radiomuseum.org/tubes/tube_oc988.html