I thought I was loosing my mind(more of it) when I would walk by my QB78 PCP and the end cap was on the floor beside it. I always put it on after a fill,how was it falling off? I caught it last night, I heard a pop and something fall on the floor so I launched an investigation only to see it slowly rise, then pop! I have a leak through the threads of the male Quick-Disconnect fitting and am wondering if anyone knows if loctite thread sealant is a good choice for this?