Last night I am watching Transformers ROTF and I had to turn my receiver down quite a bit. For demos I have the volume set to 54-56. I had the movie down to 45-46 at times last night and nothing had changed. I initially thought that maybe the subs had really broken in and were playing louder. But I thought that was pretty dramatic so I remembered earlier in the day that I turned the amp off and got up on the ladder to look in the manifold and see how hard it would be to paint the inside in place. When I got down a minute later and turned the amp on there was no output. I had not touched or changed anything. The clip lights stayed on for a while even though input was way down. I tried power cycling it a few more times and one clip light would turn off after a few seconds and the second one would stay on for 5-10 seconds. All connections were secure. I turned it off and checked the signal path. The LFE out on my receiver was not on all the way. I secured the connection and now the sub seems to be playing even louder as it is outplaying my mains and I had to turn the amp levels down some. It is also much punchier on music. My initial thought was break-in, but can a loose connection cause this type of gain?