“In the lingo of the Olympics, team Apter won another gold medal this morning, and John gets an individual gold. He set the time record for figuring out the mystery leak over our back kitchen area, and like modern remote surgery…no need to cut into the patient and instant cure. The problem seems to be none of the things that all the rest of us had hypothesized. I noticed that John was listening carefully to the symptoms of the problem which I described. For instance, it only seemed to occur with standing snow or wind-driven rain, and hearing that heavy winds often drive against that angle, he started at the top (not thinking from the bottom like the rest of us). Lo and behold, some of the nails holding the flashing to the shingles were loose and/or the the tar had come off or was no longer watertight. One was especially bad, and if you drew a line straight down from where that water from that worst nail would run, it is precisely where the water was seeping. Most snows blow a little pile against the house, and then get the warm sun and melt. Also, the heaviest rains are often accompanied by strong wind from that direction….again, focusing precisely at the nail holes in that flashing.