My leather seats are in good condition, but they frames are tweaked a bit. I hear this is a common problem on the seats. The edges of the top and bottom frames, where the adjustable bolts bend (for seat tilt angles) themselves, then tweak the frame too. 

 

I doesn't seem too big a deal to slowly pull back the leather by removing a few hog rings, then bend the frames back in shape.

 

I also have seen a reinforcement plate sold- has anyone used one of these?