I would think if you get behind the basement wall and have someone turn on the backflush for 10 seconds, you could figure out which lines are leaking. As to a picture, in my rigs, it was just two lines about 3 inches apart. They go up to the valve, which is about 3 or 4 inches long, cross over thru the valve and back down.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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