Dear Malcolm,

Very good explanation of how Caps regain a charge after being discharge.

For that reason I attached clipped leads to the caps after discharging them

On the subject of Power supply caps, I recommend some type of resistance rather 
than say a direct short from an old tool to drain the cap unless you plan on 
replacing the cap. Using the direct short method can damage either the Caps 
plates, the di-electric, or both.

Regards,

Steve Foss