Turned out great!

The floating areas error is due to the man and the stars both not sitting flat on the background. They are hovering one layer above the background (which also prevents them from sticking well). Sliding those items downward on the Z-axis just slightly fixes the problem.

Exactly what I needed!

Exactly what I needed to keep the birds out, yet bigger holes to not get plugged up.

Printed great. Wish it fit my standard 2" tubing from other chutes though. Whatever tubing this thing takes it's HUGE. No idea where to print it from... Personally I'd also like it to be much tighter to the machine vs sticking out the back so far too. So ideally it would be able to turn straight down right next to the machine to save space, and also use the smaller 2" tubing found in many other flexible shoot mixes. Now I just need to work on my CAD skills to try myself. Cheers!

Basic, but tweaked the size to exactly what I needed to fit into my space.