Squiggly vertical lines

Don't know the actual term but the vertical lines are constantly moving. Didn't check before hand how it was before changing the caps unfortunately. Its on a k7000 chassis that I was planning to put on the mini cute

Looks similar to what I had on a K7000 tube swap for the mini cute. https://www.arcade-projects.com/threads/building-arcade-cabinet-technical-thread.17718/page-3

FG jumper to logic ground on the PSU worked for me.

Your dag wire is connected to chassis ground, yes ?