A Leak from the bleed hole of the ASA is usually caused by the tank oring being bad. It may be caused by the asa pin oring(84) or the asa plug oring(38).
A leak between the ASA and the trigger frame is caused by the ASA to frame oring(28). This is usually just because the ASA has become loose.
A small leak while turning the asa lever back is normal and should seal once the lever is all the way back.
This video show how to service the ASA: https://www.youtube.com/watch?v=mxj6D6JvnBw
If the marker is still not operating correctly contact Valken customer support. Please open a ticket with our customer service department. To open a ticket, please click on the chat button on the bottom of this website and our customer service representative will be happy to assist you.