Um, no, it's not?

It's pretty clearly aligned to the left, since the thumbnails are flush with the left side of the container, and the image with the largest horizontal measurement doesn't come close to the right side. Or do you mean that each separate item, the thumbnails and main image RESPECTIVELY, as opposed to the GALLERY (which to me would be the two of them together), are centered within their respective containers?

And I would actually like to reduce the distance between the thumbnails and the main image, if that's at all possible.

Also, changing the thumbNavPosition also made the entire gallery jump from one position to the other, but still slewing left.

This I do not understand. If the <div>, which I assume means the entire gallery, is centered, and then each element is centered within its own area, why does the Main Image have a greater amount of blank space on its left side than its right, if the edge of the thumbnail is assumed to be the edge of the thumbnail container? Why is the Button Bar not centered? Why would the thumbnails be flush to the edge of the container, if the entire gallery is centered within the container?

As far as I'm concerned, if the entire gallery were centered, it would look something like this: http://www.graphitegolem.com/blog/wp-co … ntered.jpg

I want the thumbnails to the left of the image. That, in fact, was the majority of the reason I bought Pro, as Lite only allows you to have them below. I did not realize that I wouldn't have any control over the gallery layout past putting them on the left side, though.

For me, this isn't really an acceptable solution, as it's not giving me the layout I want when I bring the gallery up in what I consider a normal browser layout. Maybe this works better for mobile; I don't know, I'm not a web expert here.

I don't want the main image aligned right.

I want it, along with the thumbnails, nicely aligned center. Since everything is centered in my Wordpress site, it looks off-center with the thumbnails flush to the left and the main image (apparently) floating in no particular place.

thumbsPosition="LEFT" - I had this already.
maxThumbRows="3"  - I had this already.
maxThumbColumns="3"  - I had this already.
thumbNavPosition="BOTTOM"  - I had this already.
thumbPadding="0" -Doesn't provide any real appreciable effect, aside from making the thumbnails closer together.
imagePadding="0"  - I had this already.
imageScaleMode="FILL" - This balloons the image to the point where I can't see all of it, no matter what I seem to do to my browser's proportions. I'm not sure why this is even an option. ScaleMode = "SCALE" seems to keep it within the bounds of the container, though again, it's not really centered, and I'm kind of disappointed with this so far.

I did, and they aren't really, but I'm not going to fight with you any more about 10 pixels or so in the main image area, and probably about 4 in the thumbnail area.

Thank you for explaining that now; this is not completely obvious to the uninitiated.

It has that background color so I can see whether or not these efforts to center it are actually working- as I already mentioned, the main problem is that the fact that the pieces of the gallery, however you want to group or classify them, look out of place with the rest of the page's center-aligned content.

Changing the StagePadding didn't do anything by itself. Changing the ThumbPadding didn't do anything period, aside from make the thumbnails closer together. Changing the ThumbNavPosition (for whatever reason) to Center along with changing the Stagepadding seems to have (more or less) fixed the issue, though really, I have the nagging feeling that if I went and measured it again, it would not actually be centered, but close enough as not to be worth arguing about, and really, I'm still somewhat vexed that the main image is not absolutely centered within its container, especially with a Scale option enabled- shouldn't the program be taking care of this?