[Colonel Biggs]

I have the core tool, and I have used several cores to determine if that might be the source of the problem. The nut for the bridge washer was snug when I removed the tube from the tire, but it was not totally tight (even though there was no sign of air when I water-tested the tube).

I am going to apply some contact cement at the base of the stem and tighten up the nut and re-insert the tube in the tire. I am still suspicious that it does not require much air to inflate a standalone tube, which is why I may not be receiving any readings from my tire gauges.

Gordon