Moon,

I'm afraid I have to agree, only I put it a little more simply; it's the
Gold.
The root causation is the thing books are made of... and the bottom line it
could be as simple as Operator Error.  Am I over simplifying or is it
becoming clear that HASL or any solder coat just won't work, the OSPs tend to
puddle in fine geometry's (like BGA lands), folks aren't real secure with Tin
(although I think its very nice), and ENIG is unpredictable.  Hence, I like
Silver.
Please, someone correct me on this conjecture.
And by-the-way, Moonman this is excellent insight and I thank you for the
input.  I sincerely do empathize with your plight.  My folks got back to me
with the standard ENIG answers I expected; watch your phos, keep superb
records, be a process zealot, etc.    We have not had a problem with ENIG
(knock on wood), but is that a ticking sound I hear?

Boston Brad

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