Everyone gets frazzled, now and then.
Best thing to do at that point is nothing.\
Or as Brian says, go brew a cup of tea, or a brew of your choice. Whatever, just walk away. Its amazing what the subconscious can do if you just give it some time and rest.

In any event, glad you found the problem, and that it was not too expensive. It isn't even difficult to do--even in the cold.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags