I remember some brief discussion here some time back re: flux removal and some 
were saying that they don't remove flux since it has no real effect on the 
circuit.  Well, I have now proven to myself that it *does* have an effect.  I 
was tracing down some odd results at an analog PIC input and cleaning off the 
flux near the PIC's analog pins solved the problem.  BTW, this was rosin 
amine flux, and I cleaned it off a CW Rosin Flux Remover Pen.

Cheers,
-Neil.
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