Veer90, that's what mine would do. Some days it would hold no problem, then out of the blue it would slip. I kept it like that for about a month hoping it was maybe just a one time thing, but it would pop back up periodically, then it started doing it more often and eventually at the end of said month it would slip every time. So I'd bet you're on a ticking time bomb.
From when I put the order in to it arriving at my door (and I'm smack in the middle of the US) took 5 days (ordered it the 9th of august, arrived on my front door on the 14th).
Wouldnt be surprised if a group buy might take longer if they all ship out together.