Deck access without draining would be nice, but also making a one piece chimney or threading it would not affect performance, but increase durability. A press fit is ok for certain areas, but not a critical spot that basically holds the top half of the tank on. But for the price it's still a steal, it's the only tank I bought a second of, and I have most of the other tanks that are considered to be of equal performance. If it was 50 bucks and press fit Id be disappointed, but Id pay 35-40 for it if it was threaded. It made a mess, and explaining why I smelled like strawberry creme was kinda annoying. Lol