Our new to us 2005 H38 has a slow leak on the water manifold - not enough to cause the pump to cycle but a steady drip. I closed all the valves , turned on the pump and opened the valve for the pump and could see water drips coming from the top of the manifold but not around or near any of the valves so i am guessing this is not a issue with any of the valves but maybe something in the plastic housing ? any one else have this same issue? should i replace the manifold system ? the one sold here on this site is not exactly the same with 4 hot and 4 Cold- i have Hot and Cold in at the top i assume In/Out from water heater and 3 Hot water connections, 3 cold water connections plus the shore water inlet plus one for the pump. Are there any other suppliers of this system ? Thanks in advance