Just recently purchased a built up fixed gear. Great parts, nice english made wheel set, good crank and a pretty nice schwin frame. I guess I didn't look close enough before purchasing, as I definitely would have asked about it being a possible problem.

While the chain has nice tension and is well aligned, the rear wheel is hardly pulled into the dropouts. I'm concerned about this. I've probably ridden fourty or fifty miles on it already but I just want to clear my conscious and get it fixed if it's a real problem. Here are some photos of the alleged problem.

The bottom right photograph is the opposite side of the wheel, where the cog is NOT located.
Thanks in advance for any insight.