kevin, I agree that the indicator is still a bit choppy, so I borrowed an idea from George Lane, (at least I think it was George Lane), who created the Stochastic Oscillator, i.e., I ran a 3-day SMA of the finished 21-day oscillator-thingie.
Thus, the 21-day SMA is sort of like the stochastic %K line, and the 3-day SMA of that is like the stochastic %D line, except, of course, that the underlying math is completely different. {g}
Anyhow, before I confuse my little doggie brain any worse than it already is, here's the chart.