Well, I decided I couldn't live with "good enough" so I tackled the rear derailleur on my my lady's Schwinn once again. I had some success using a straight edge, ruler and adjustable wrench to adjust the RD hanger. Today in my effort to improve on the the adjustments that I made previously I came up with the idea to bolt a 1,2,3 block to the RD hanger to use as a reference surface, that way I could clamp a 24 inch level across the wheel and rotate and measure the adjustment that way. I got it adjusted to within 1/16" that way and put everything back together. There was noticeable improvement but there was still a bit of "rattle" on that second to largest cog.

I thought about pulling the RD once more and trying again. But instead I picked up a large screw driver, placed it between the cassette and the RD hanger and pried it out just a bit (actually about as much as I was afraid that I had bent the hanger when I tightened down the bolt holding the RD). Readjusted the stops and tension one more time and now it "snaps" into each gear and runs quietly, all is well...

If I had to do that job very often I would just go ahead and buy the DAG-2. I know how to do the job without it and have proven to myself that I can do it, but I can see how that tool could save a lot of time and frustration and I think it is one special tool that just might be worth it's price. If I had the right parts laying around I would make one myself but in this case I just cannot duplicate the function of the Park tool with what is currently in my scrap bin.

Thanks again for the help......