RE: Piston Ring End Gap
Google Earth. w8, you've GOT to download this. The next best thing to a flight simulator I have ever seen. Coose a location and you get an aireal view that you can zoom in and out on and then drop down to a topographical view, don your flight suit and step into your SR71 Blackbird and fly at Mach 3 anywhere you want. You could travel from Taylortown to Burtchville, MI and not burn a drop of gas.
Bill