When connecting the UAT, do anyone ever not use the supplied threaded cap that goes over the line to the fuel pump. I tightened it as tight as I could and I'm still getting a slow leak when the plane the plane is turned upside down. I'm not sure if this cap is cutting into the tygon or not...still trying to find the exact sorce of the leak. I'm sure this could lead to an significant air leak causing flameout. Could i remove the cap and safety wire the connection? I've done this with all my other lines and have had no problem.

Thanks in advance for your help!
Chris