Tube question from a rookie

[zeno]

There is an electrolytic on the cathode of the vert output that
causes the bottom to pull up. Eventually the vert should be recapped
except for the discs. Also the 3 legged integrators changed.
Check all resistors especially high ohms ones. Do recapping
one at a time then test to be sure of no mistakes.
These will be of interest........

https://www.youtube.com/watch?v=vt7OLBCoR8o
https://www.youtube.com/watch?v=6lZIJQ-cKDs&t=141s

73 Zeno
LFOD !