See I kind off thought that at first. It was just weird that as soon as I put 3/4 of a tank 91, that it stopped. It was coming from what sounded like the lower front. So I had a thought that maybe it was the cat in the up, starting to come loose or something since I haven't gone catless up yet.
Like I said it went away so I'm not worrying to much yet, but keeping it in the front of my head to watch for.
But on that note is there any warning signs for when the cat goes? Or will it just let go and grenade