thanks for the suggestions, I like all of them.
-I just ordered a 3Dsolex block, though I had enough leaky nozzles before the UM2 that I understand the design logic behind making the nozzle and block as one part. Definitely worth trying though. I need something if I want to keep playing with that colorFabb carbon filament...
-I don't need a freeby thermocouple. I'm much happier with an open-source manufacturer who sells spare parts at a reasonable profit and keeps supporting its older models, rather than one that first sends out replacement parts for free, but then removes spar