Originally Posted by
bsyptak
Did you put a lot of air in the tubes? The tube will swell quite large compared to it's size in the tire. I pump mine up to about 2" or so in diameter. Then fill a bucket with about 4" of water and put a section of the tube under the water and check for leaks. Do this all around the tube. You should soon find your hole.
To find the embedded debris, use a cotton ball around the inside of the tire and watch for fibers that snag on the pokey bit. You can use your hand also but, as mentioned elsewhere, be careful. You might try aligning the tire with the valve stem (the label is a good indicator) so that you put the wheel back together the same way each time. Mark the tube with a permanent marker with the side and direction so that it goes back together the same way all the time. If you end up with multiple punctures in the same spot, you've found a hidden pokey