I don't know what I did but I was able to get the blade to stay on long enough to make adjustments to the top wheel. I was able to get it to the center of the top wheel, but trying to move it back to the position Snodgrass recommends, it would run off the back of the wheels. I also found that once adjusted, if I lowered the tension lever down and then raised it back up, the blade would forget itself and run off the back of the wheels. Anyway, its on and I was able to adjust the guides and make some cuts.
Thanks all for your assistance. Happy new year.