Wow, thanks for the detailed feedback! I'm glad someone else agrees that my precipitation is messed up I think I'm clearly missing something, so back to reading for me.

In the meantime, you gave me an idea re: getting rid of some of the coastal mountains. In relatively recent geologic history I have the eastern coast of the west-central continent being a retreating subduction zone, so I think there's at least some justification for turning that Andean range into a bunch of back-arc basins and island arcs. I sketched that change in and also went ahead and amalgamated your current / pressure ideas with mine, so here's where things stand while I work on figuring out what I'm messing up with the precipitation.

Currents
currents_2.png

Jan / July Pressure and Winds
Jan_pressure_2.png Jul_pressure_2.png