Congorilla Horizontal foldover after warming up

xkillADAMdeadx

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I've searched as much as I can the past two days, but to be honest I'm still not entirely sure what I'm doing. This is the first time I've attempted any kind of circuitry repair or arcade repair in general, sorry if this is addressed somewhere else. I'll gladly take a link if it is!

This is a 1981 Congorilla with a WG K4600 from what I have learned in the past few days I've been a member here.

I've attached a picture of the foldover after the tube has warmed up. Takes 2 minutes tops for this to appear, upon cold boot the screen is perfectly fine.

There's a little bow from the top down as well.

The board was recapped with a Bob Roberts kit on the daughter boards in 02/2014, via a tag hanging from the boards. There was a bag of main board caps attached to the inside of the cabinet as well. I've adjusted all I can adjust from the pots, but that line will not go away. I appreciate any assistance!
 
I would start with new caps, Bob's cap kits were well know for being junk. Capacitors are only good for around 15 years, even if they have never been used. The caps Bob sold looked like they were from the early 90's.
 
Forgot to include a picture, if that helps. I'll be ordering a cap kit soon I guess. The paper capacitor I know hasn't been replaced.
 

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