There's a lot more to the analog board than just the capacitors, diodes and optoisolator.
I would first check the flyback to see if it's good or bad. Look at the glue on the top of the flyback coil and see if it looks heat damaged. It should be yellow, if it's brown or dark brown/black, it could mean the flyback is failing. You can check for arcing if you turn the machine on in a dark place and look for corona discharge, which is a purple glow, which usually makes a hissing/whining sound and also usually creates ozone.
If the flyback is fine, I'd recommend reflowing every last solder joint on the analog board and the neck board with new solder. Compact Mac analog boards are notorious for having failing solder joints due to the excessive heat inside the machine. Sometimes you can see them, which looks like a second ring somewhere between the PCB and the soldered pin, but often times you can't because they're microscopic.
Another thing is what type of capacitor did you use for the horizontal deflection? It's the large 3.9uF bipolar capacitor. You can't use a normal capacitor here due to the high frequency, and since this type of capacitor is no longer available in electrolytic style, you'll have to use a polypropylene film capacitor rated for high frequency.
