Good call, Earl.  The dry films just don't have the stability or process
durability to cut it.  We largely discontinued use of dry films, as an
exterior coat, a number of years back due to repeated interaction with
cleaning media, fluxes, conformal coatings, and a variety of other problems.

We do use thin dry films as a tenting media, when overcoated with LPI.  I'm
also starting to see some of the newer LPI's that will do a satisfactory job
of hole plugging on the smaller diameter vias (<.012" finished).

More on this when I get time - regards - Kelly

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