should be D1, D2, D30, and D31 for the diodes.
the transistor to change will be Q17.
the parts list shows it as a 2SC1674 but i think Galaxy has since improved that part and is using a 2SC2986 or 2987; cant remember.
the transistor they are using now is just about as good as the 2999.
i didnt notice any difference when i replaced it in my 959.
the diode changes however, will help a lot.
dont forget to check Q54 to see if its a 2SB827 and not a 2SB754.
pretty sure Galaxy is using the 2SB827 exclusively now, but still worth checking.
if you do want to replace Q54, the 2SB817 is the part to use.
good luck, nice radio,
LC