I am going to be installing the PRXB in the next couple of days and have already ran the harness through the firewall. My question is about the air tubing. Do these lines stay in once they are in or will they come out after the system is running. I have done a dry fit on these parts and the tubing comes out. Is there a trick to putting these air lines in where they go or do I need to do something else? Any responses will be greatly appreciated.