Originally Posted by
cyccommute
Blow the tube up bigger. Small leaks may not show up until the tube has be stretched significantly. 1.5 to 2 times normal size works for me. Work the tube around in a tub of water or sink in about 6" sections. Wipe the little bubbles off and see if they come back.
Thanks. I think I will keep pumping it up through the week (only just one more time if past results indicate future performance) and devote the time I would have spent replacing the tube this weekend to really *inspecting* the old one for wherever that leak must be.