POST YOUR WHOLE SPRINGFIELD SCREENSHOTS!

I zig-zagged across the screen from left to right and back again, making sure there was some overlap between the shots... and there were a LOT of shots! I found that zooming in or out at all kind of screwed up my stitch, so I was careful to stick with the default zoom. That might be part of the problem???

Other than that, I'm not sure as I did mine by hand.