Leaky capacitors need replacement?

ALWAYS!!!!!!!!!!!!!!!!!

Replace the capacitors. Be careful though there may be other components affected by the leaky caps.  An O Scope will help to see if the signal looks clean.

Those are polarized capacitors and should be replaced with the same type and value. Film won't fit! Non-polars won't fit either.

For those who are curious, please take a look at the photo from 6moons.com:
https://6moons.com/audioreviews/musicreference/hero_open.jpg

Those two 33uf 350v capacitors are smoothing/filtering purpose, you can clearly see it connected to a 1kohm resistor go to the output tube screen grid.