I have managed to clear the pipe of water, we are on the last fitting. I removed a piece of the old pipe and replaced it with new. I am trying to connect a new piece with the existing old pipe. Prior to doing this i did encounter a pinhole leak. just above the problem area, i had no problem achieving a good solder. I do not know why that on the pipe i am achieving differnet results. within a 2" area. I have opened up a valve on the bathroom sink, and the toilet, though the area we are working on is the shower and do not have ne valves. any suggestions would be greatly appreciated. thanks for your assistance.