Different take - some of these guys have been turning wrenches on PT6s since before some of us were born and they've seen what works in real conditions. The manual is a starting point, not the gospel according to Pratt.

Venting? Ha, I tried that once and forgot about it for an hour. Ended up with paper so brittle it basically turned into confetti when I touched it. Sealed it tight right away after that disaster and it was fine, but probably just got lucky. You ever mess up something simple like that and wonder how you even function as an adult?

That's a great point about the climate feedback loop (Phoenix heat is brutal on concrete finishes). A softer broom makes a huge difference in preventing surface spalling when the sun bakes that slab every afternoon.