I love TZ, have used it for about 50 posters so far and it's been pretty reliable/flexible.
But lately I've been having an issue. After exposing I wash out the screen, everything looks real good. But when I look at the mesh after it's dry, there seems to be a fine glaze or residue that's dried in the open part of the stencils. Like some streakyness from the emulsion seeps down into the open areas and partially blocks the stencils when I go to print. It's also been troublesome when I go to reclaim the screen, causing me to need to replace mesh prematurely.
The emulsion is pretty fresh, about 3 weeks old. I tried letting the screen dry flat but that doesn't seem to help. I'm using a 500w halogen utility lamp. I typically expose for 19 minutes. More time? Less?
Any help is appreciated.