In the case you'll like to test capasitors (excluding Hunts!) have a look to the link:
http://www.radio-ghe.com/isotest6.plan.htm
IsoTest tester ( by Mr. Heigel) is a suprior tool if you like to repace just leaking capasitors and save as many "original" as possible. Unfortynately this tester is not commeriaclly available but it is not so difficult to make it.
regards
Ake