Question about GeneralAire 1042LH Humidifier

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I have humidiifer problem i thought we had solved a few weeks ago. Steve was very helpful. I have a generalaire 1042lh bypass humidifier that was not humidifing the house. After much investigation, we determined that the orifice in the orifice/strainer assembly on the solinoid was clogged. I put a nail through it and it began flowing. I thought the problem was solved, but it turned out the water would now flow constantly, even when the furnace was off. I thought i somehow ruined the orifice and ordered another orifice/ strainer assembly (part 990-37-76). I installed the new one, and it still constantly flows (even with the humidistat off. I do hear the click when i turn it on, so it is not the humidistat). I am at a loss. Could it be the solinoid itself?

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