Please post back when you have results. I tried everything to get the supposedly updated drivers for Big Sur to work on my network-attached non-PS Z3200 and had nothing but headaches, mostly when trying to print more than one different print in a run. Continuous "broken pipe" errors. I finally reverted to using a Sierra MacBook and shared the printers on the network. Keeping the Sierra solution going isn't a problem, but I'd like to have alternatives.