Thanks! Made those changes and trying simulation run again. I have been encountering some errors when trying to run - hoping this helps!
BTW - I posted the continuation of this thread (re my simulation errors) over in the CFD category, wasn’t sure if this was the right way to do it but thought for future referencing would be more useful to others here — Simulation Failed: Gauge pressure field diverging / floating point exception
PS - I’ve not used Onshape, will check it out!