I girded my loins and returned to Milky Way. I worked all night on smoothing out the lumps in mm. 61-75. It’s better, but I still have some polishing to do. The subito p at m.64 still sounds gulpy, but that might not be an issue with an actual orchestra.
There are other places where there are gaps in the sound, but I don’t know whether I want to add the missing instruments for those measures. Tutti can be boring.
I’ll keep listening and make some decisions.
And now you can listen too: turning off the reverb makes the thing bearable for my little laptop. It won’t sound as lush, of course, but all the notes are there. Here’s the mp3.