Above is a link to my google drive containing some pics of the A-4 Power amp section, I tried to get them to appear in the post but no luck, sorry but let me know if you can see them.
Yes, there are some rectangle ceramic resistors that are not original and in two sections where there is supposed to be one 1 ohm resistor they have two coupled together. 717 reads 1.3-4 ohms 718 1.3-4 ohms as well 725 and 726 both read 1 ohm.
716-105 ohms
715-107 ohms
724-124 ohms
723-which I think is where the 4 coupled resistors with the 4.7 electrolytic cap is and I couldn't get a reading from that mess. Closer look at the power section, it has had a lot done to it, ugh!