Wait, the screen came back on after a HOT wash??

Did you thin the wheat paste at all or just go straight from the jar? I made the switch a few years back too and the first batch I mixed way too thick, the pages wrinkled like crazy. Thin it out and work fast, that fixed it for me.

Went through the same thing with my old shop buddy years back. I was doing the hose and brush thing every couple weeks and going through chains like crazy, he told me I was wasting money and I told him where to go. What finally worked for me is the park tool chain cleaner with the solvent in it, then a wipe down and one drop of lube per roller while spinning the cranks backward, let it sit overnight and wipe the excess off in the morning. The overnight thing matters more than people realize, that's when it actually gets down in there instead of just sitting on the plates. Rain riding is what kills chains fastest up here so if you do that at all, shorter intervals matter more than the fancy cleaning.