PSA: the "just bump the black to 100%" trick my first print guy gave me in 2009
He swore rich black would fix my muddy poster shadows, and for years I trusted it until a glossy run in Chicago came back with smeared edges and a $180 reprint bill. Turns out rich black is only good on coated stock, not the cheap matte I was using. What's your go-to black mix for uncoated jobs?