Ron,
That's similar to how I have done all of mine. I would run them rich on the ground, just short of 4 cycling. Every 30 seconds I would lean it out slightly for 10 seconds, each time going slightly leaner. I'd repeat this until I could get a good repeatable idle. That usually took 2 or 3 tankfuls.

Then I would fly keeping it pretty rich. After each flight I would lean it out a little bit. By the tenth flight it would be business as usual.

Joe