Ok, so I've been using this "WB 5112F White Flat" for a while now, and for the most part it works fine when combined with some other color and a little extender. But I just tried printing on the black 140lb French construction paper and after about 15 prints the paper side of the stencil starts getting tacky and the paper begins sticking. Bad. Then the stencil just starts randomly breaking down and I have to stop.
It happened before. Same combination.
And Geoff's got the timing down good on the exposure, we usually don't have any problems. Am I using the wrong ink? Does the paper have something that reacts with the ink?