As much as I love the Vantage line of knives, centering has been an issue in every Vantage I've bought (two Vantage Force Avids and a Vantage Pro of 2011 manufacture and a Vantage Avid, Vantage Select, and Vantage Dymondwood Select of 2010 manufacture. also, two small Vantage Pros and one small Vantage Select of 2010 manufacture). They were all off centered to varying degrees, the worst of which were my small Vantage Select and my two Vantage Force Avids. I was disappointed that the Force Avids were off-center so much, considering they carried the 2011 blade marking. I managed to center all of the blades except for my Force Avids and small Select; those three blades weren't even a quarter of the way over before they became impossible to open one-handed and the pivot was impossible to tighten further.
Then again, of all the liner and frame lock knives I've ever seen (including my own, my friends' knives, and all the knives I've handled at the local surplus, outdoors, sporting goods, and knife shops) I have only ever seen one that looked perfectly centered to me prior to adjustment, and that was the display model of a Spyderco Tenacious. I'm even critical of backlock knifes; my Buck 110, large Bucklite MAX folder, Spyderco Native, and my friend's Gerber Gator all have blades that look off center to me.
So with that in mind, take my input with a grain of salt. If you're looking for flaws, you will find them. If I were you, I'd buy a Vantage and then pick up a T6 torx driver for a few dollars. The T6 screwdriver will let you play with the pivot if the centering is not to your satisfaction, and the tool is also useful for fully breaking down the knife for maintenance and thorough cleaning so it's a good tool to have anyway.