In fact, Enve suggested tire pressure is far from max 80psi. If you weigh 250lbs, Enve recommend 67psi for 28c tires when using with 4.5AR. I'm ard 165lbs and using 55/60psi with Fusion 5 Performance 11storm TLR 28c. It rolls unbelievably great. It's unimaginable for anyone who has been on narrow tires for years. Highly recommended.
Everything about building wheels, glueing tubs, etc.