You likely have a syncing issue. You should have a red, green, blue and then a black for ground. The other wire(s) (1 or 2) are your sync. How many sync wires does your harness have? How many pins on the monitor header where the sync connection goes? You might have to short the sync wires together to get a stable picture. It would help if you provided photos of the connectors.

Your 3 pin sync connector looks messed up to me. Pin 1 should be ground (may not be needed). Pins 2 and 3 should be tied together (I think). Try that first.

If unsuccessful, try this:

Take off your Sync cable and turn it 90 degrees. I want you to insert pin 3 into header 3 only. Does that work? If not move over pin 3 into header 2 only. Does that work? One of these 3 things should get you up and running.

Pin 1 is ground. It may not be needed but it shouldn't be the orange wire. Remove that from the connector and try it that way.

Someone fiddled with the small 3 pos plug. Plug that connector off by one spot to the left so the sync isn't running to ground.

I assume the focus adjustment on the fly back transformer didn’t give you the desired results. Probably time to install a new capacitor kit.

Turn on your picture tube for ten minutes before making any adjustments.

Set your Brightness and Contrast knobs to about 75% rotation.

On the flyback, adjust the SCREEN control brightness until you see the slightest retrace lines, these will be very light grey lines that are diagonal about every inch.

Use the focus control on the flyback to get the most distinct lines you can.

Now comes a bit of fiddling. I use the brightness and contrast, and the various color controls on the neckboard to get the best looking picture I can, with the tiniest amount of retrace.

When I've made the best compromise I can, I back down the SCREEN control on the flyback the tiniest bit to make the retrace disappear.

The secret to vibrant colors is dark blacks, so the SCREEN control is primary to getting your sharpest, brightest picture.

Now, if the focus 'drifts' (it's sharp, then a half hour or even ten minutes later it's fuzzy), this can be a bad flyback (nothing to do but replace it), or, unfortunately a bad tube. The CRT jockeys you may be able to find in your area can try to 'rejuvinate' the tube, but this problem (fuzzy) isn't what rejuvenation helps with, and rejuvenation only gets you a few months more life out of the tube anyway.

One way CRT's fail is they 'get fuzzy'.

Bad capacitors CAN cause this, but if it was FULLY recapped (instead of 'I replaced a cap or two that looked bad'), then this isn't a capacitor problem.

Good luck!