My name is Guy Williams I am a service tech with Haas Automation, Inc. I would like to help you with your problem. You said you added a sock filter. Is it our AF filter system or did you buy one some were else? I just need some info to make trouble shooting your problem easier. You can get a hold of me at the factory. 1-805-278-1800 and ask for Guy Williams at ext 7110
I look forward to helping you with this problem.