From a post over on the Early V8 Forum
[FONT=arial,helvetica,verdana]Many, perhaps most new condensers are simply poor quality.
NOS condensers are often defective due to age. A couple of years ago, I'd tested perhaps 50 NOS condensers and found just four as I recall that were still within spec.
I have had great experience with Hunt's Magneto condensers. The 32mfd is the best choice in my opinion. A bit pricey but hey, once and done..[/FONT]