I made some tests, with different C1, C5 and C4 values, and I used R30 = 4k7 (as it was in the V15 schematic).
I tried to reduce C1 and C5 values in order to make the power supply to oscillate.
1. Vout=1.21V ,SlowCC=3A ,Rload=0R (only resistive load) , C1=470p ,C5=470p ,C4=removed
0879-0883
2. Vout=26V ,SlowCC=3A ,Rload=0R (only resistive load), C1=470p ,C5=470p ,C4=removed
0884-0886
3. Vout= 26V ,SlowCC= 3A,Rload=0R (only resistive load), C1=100p ,C5=100p ,C4=removed
0887-0888
4. Vout=1.21V ,SlowCC=3A ,Rload=0R (only resistive load), C1=100p ,C5=100p ,C4=removed
0889-0891
5. Vout=1.21V ,SlowCC=3A ,Rload=0R (only resistive load), C1=100p ,C5=100p ,C4=4.7n
0892-0895
6. Vout=25.9V ,SlowCC=3A ,Rload=0R (only resistive load), C1=100p ,C5=100p ,C4=4.7n
0896-0900
7. Vout=1.48V ,SlowCC=3A ,Rload=1R (only resistive load), C1=100p ,C5=100p ,C4=4.7n
0901-0903
Please have a look at the attached screenshots and tell me what you think.