Winfield,
You still have an HP4194, don't you?
Try doing a sweep of capacitance and ESR from 60 Hz to 1 MHz of some caps from a defective mother board. I visited my local computer repair guy and he gave me a couple of defective boards destined for recycling.
Especially sweep some of the really small, high capacity, low voltage caps. I saw some unusual characteristics with the physically small caps.
Some of the ones I tried had self-resonance at 100 kHz.