D-Nak, i semi-agree with what you posted above, except for the sick gigs don't move segment. I've gone through 4 or 5 of the sick ones and for the most part, IME, they start off in one spot, but then begin moving *while* balding and gaping. It's interesting that you've never seen yours move when it was sick.
For the most part, gigs are not supposed to deflate in the daytime, that's true. But, I have seen mine do it occasionally (maybe 3-4 times since I've had it in 8 months). However, the caveat for this is that when I say daytime, it is daylight for us, but the tank is still semi-dark bc the lights have not kicked in yet. When the lights kick in at night, I have NEVER seen it deflate.
Deflating only ONE time in 2 weeks that you've had it is still promising news to me (I will be "glass half full" here! haha

) I would be very concerned if it started deflating more often .. . now THAT would be bad.
OP, do u have any updates? Pics would be good too.