Unfortunately I don't currently have any other spare caps laying around that would be around the required value (larger than 687pF but smaller than 10.5nF) to conduct a third test. I will need to buy some.
I have a bunch of caps at 1nF, 2.2nF, 3.3nF, 4.7, 6.8, 10nF. I could post you one of each, or if you live near the Weston Creek area you could pick them up from me. I am working from home, so anytime is good.
Or you could buy some from Jaycar for 10c each I guess.
DC
Mantra: No more pedals, must finish BlueyCaster...
Disclaimer: I haven't done woodwork since high school, and wasn't really paying attention at the time ...