Jon,
Here is a great site that shows the shiny links on both top and bottom. IF the bottom is 1 link off, there will be an extra link on the driver side, making that side loose. Simultaneously, there is 1 less link on the passenger side, making it really tight. Engine will run, but likely not great.
http://www.4crawler.com/4x4/CheapTri...ingChain.shtml
For everyone else, these are great instructions with pics!
-Jeff