Great concept - as others have said it lacks a bit of airflow to the AMS. I'll be making a manifold to install a 40mm USB fan at the AMS inlet soon. Update: Installed a USB 40mm fan from Amazon. Fan was too slow, not enough airflow. Cannibalised a 28000 RPM Rocket RC 30mm fan from my RC kit and soldered it to the Amazon fan USB cable. We're in business. This rig has been running for 10 minutes and the AMS is up to 37.5 deg C and rising, humidity down 2%. Dryer is set to 60 deg C.