My deuce has been blowing off air from what I believe is the air pack vent line, and now I can hear a leak from under the truck. Somewhere around the transmission area. I didn't have alot of time to pinpoint it today. It will build air and pin the gauge to the right while the truck is running, but within a few minutes of shut off she is out of air. Also, while driving around after the air builds up, the brakes slam on just by tapping the pedal. I can push on it as hard as I can (after I stop) but the pedal will barely go down half an inch. Earlier today, after I stopped at an intersection the light immediately turned green I attempted to pull off but it seemed like the brakes were still engaged for a moment. Could the governor be bad and the air compressor is actually overcharging the system?