So, I figured I'd try one of the Smoothstop II's. The wheels on my Scorpion freewheel very well initially when the air line is removed from the valve. After reinstalling the air line to the system and using the brakes once, it refused to return to a freewheel. Its as though its not letting all the air out and is still holding at a minimal setting. Any ideas on how to solve this other than buying a Jettronic valve?

Dale