[BeamT]

Hopping over the adjacent trace would be acceptable in this application. I would suggest using a short piece of spaghetti tubing to insulate the lead over the hop. You might also consider potting the electrolytic in a very small amount of adhesive to give it some mechanical stability. You could also gently scrape off the enamel on a small area at the end of the remaining trace to create a new pad. Form the lead to recreate the path of the missing trace, and solder to the pad you created. Consider potting the lead in a very small amount of adhesive for stability. This capacitor is in a sheltered area, so not as likely to be disturbed.

Out of curiousity, were the old caps bad?

You could also post a WTB for the entire board and/or workable 25EC58 chassis.

The 25EC58 was not rare. I am seeing 2 on FB MP in the midwest, both working, one is a non-remote Avanti. You are very dedicated to this TV, having a good working baseline chassis could be a great advantage....

I would consider the flyback a last last resort on the jail bars.

Do you have a spare HV tripler?

I'm not familiar with the BK 470, someone who is will have to comment on your CRT test. From the pictures you have posted it appears you have the brightness on the low side, in a darkened room, good focus and gray scale. It would be interesting to see how it looks with the brightness up a little bit.