Here's the video I promised. Listen to the audio, watch the chuffs of the smoke and watch the side rods for the timing. You'll hear a chuff skip and the # of chuffs changes at that point. Notice when I slow down I lose the audio until I fully stop, then it comes back when I start up again. This is the second generator set at 7 mm or .040. The only thing I didn't do was change the tach tape when I replaced the generator. But I did blacken the stripes with a marker.
My Chessie Steam Special has no issues. 4 Chuffs/revolution, looks and sounds great.
