Thanks for the kind words. I had been looking for a project that I could use to learn about the Arduino, and when I saw the motor controller it occured to me that it might survive the back EMF of a transformer to let me make a computer controlled high voltage supply.
The two 630TS caps that I have gotten to reform so far show a lot of dielectric absorption. This Wiki explains it:
http://en.wikipedia.org/wiki/Dielectric_absorption
Since those two caps are in the power supply, they could probably be used if I wanted to live dangerously. I will definitely replace the ones not in the power supply circuits, especially the ones in the deflection circuits. The last thing I would want to do is destroy irreplaceable parts to save the price of a few capacitors.