steelbikeguy

The only thing I could think of was to isolate the leak to a section of the tire by folding over the tire (not unlike bending a garden hose to stop the flow of water). I may have used a vise-grips pliers to help with this. With that technique, I used something like a binary search to isolate what part of the tire it was.
It worked pretty well... once I unstitched the section of tire, I didn't have to look far to find the holes.

Other than this incident, I tend to not get many flats, either on clinchers or tubulars, especially when I stick to the rural roads. Riding in town is much riskier, with more broken glass and such.

Steve in Peoria