U1=LM358, Q2=2N5551, R5=4k7, C3=1nF, C2=47uF in parallel with 100nF ceramic disc (new capacitors).
Vout=27.2V, Imax=2.98A, Rload=10R, C3=1nF film capacitor
133_000
Vout=27.2V, Imax=2.98A, Rload=10R, C3=1nF 1kV ceramic capacitor
133_002
The PSU PCB is the same as in previous reply, the only difference is that the PCB and heatsink were moved to the nearby table for tests.
I think that the overshoot is probably influenced by some external factors...