Ray, I could be wrong, but I don't think it's the mashing technique that distinguishes JD and other Tennessee whiskies from Bourbons. The differences in state of origin, water, filtration technique and fermentation all play critical roles, also.
Mike, it's just a function of allowing enough time and having a good strategy
Stay hydrated, eat lots, live with the consequences. Like my wife says when playing pinochle, "bid 'em high, sleep in the streets!".
Clyde, you should check out the Beer Thread. Start at the beginning