Lost the Bottom of my picture!

[Magnavox300]

Well, it's been a year and a half since I posted this, but i finally decided to try to fix the shrunken bottom of the picture on my Magnavox300.
This is the first vintage TV set I purchased about 3 years ago ...
My Emerson is just not working, no matter what I do, so I thought I would take a break, and get to work on this.
I appreciate the help I always get, and did take a look at all the components in the vertical. I didn't find anything directly in the circuit, but after a few days of looking, I decided to just go ahead and replace the only electrolytic in the vertical, which was a 50uf 50v cap... It tested fine, but I figured I'd replace it just in case it was leaky.
After installing the new cap, I noticed right underneath it, another cap I had originally replaced, and it looked like it was dented or burnt somewhat... I took off the Pos. wire, and tested it and it did not test! This Cap must have burned out, and after replacing it, the picture is back to it's normal height!!

Heres a short video:https://www.youtube.com/watch?v=xODOTakRZYM


I don't know exactly why this particular cap was the problem for the loss of the bottom of my picture... I included a schematic with a circled section, I believe it was C2-B, a 20uf cap.
I also included a photo of the bad cap...
Funny thing is, when I bought this 1960 Magnavox, it worked fine when I got it home even after 53 years! I replace the caps, and one of them lasts only two years!
So... I was wondering if it would be worth actually buying more expensive caps when restoring these sets, like F&T or something similar?